I'm probably late to the party with this idea, if so, point me in the right direction please.

Would be nice to just have both map areas, peds, vehicles and mods under one game. Instead of running IV with terrible performance on glitchy enb's and downloading mods for V features and vehicles for IV, requiring downgrades, etc.-pains-in-the-ass.
Obviously some limitations involving story missions of IV and won't have all the mechanics of both games of course. But I would think porting the maps, peds, vehicles would be fairly straight forward.
It would be absolutely awesome if both could be loaded into the same session and be able to fly between them!

@flying_bulletzzz said in Tutorial on how to convert 'replace' vehicles to 'add-on' vehicles?:

@CattleprodSodomy

Thank you much, this makes it quite simple. Weirdly it didn't show up when I searched youtube.
Anyway, seems to be about the same as what I had described, minus the 'SExtraTitleUpdateMount' stuff, which seems to be randomly included with add-ons in the first place. Also the base files I was using had extra things that pertained more to the original than what I was converting it to.

@TRDOffroad97 said in Tutorial on how to convert 'replace' vehicles to 'add-on' vehicles?:

Tbh I've always had issues with getting custom bikes to work with the game. The best thing you could do to increase stability is try getting a better gameconfig or even turn off traffic when testing it out.

Any vehicle can be converted to a addon. It's just that some are more involved than others (especially if it has tuning parts like spoilers).

Yeah i got a new config already...I never have trouble with properly made add-on bikes beforehand though. And the Aero-x above rarely crashes the game, just seems to be quite random. I really like to make sure it's properly converted instead of quickly hobbled together like I tried, regardless if a new gameconfig helps.

Is there any way to have a simple mod that revamps the pricing in the game?
Particularly the ammu-nation prices. Like 30k for a suppressor and other simple addons that are ridiculously gougey.
Also investment/return on businesses would be nice to have modified as well.

Say you don't want to replace the vanilla vehicles, or you already have replaced the vanilla vehicle in question and don't want another replacement. The author doesn't have add-on version uploaded and he's no longer responding/updating.

For example:
https://www.gta5-mods.com/vehicles/yamaha-aerox

This file wants you to replace the scooter (faggio2)
As well as it's handling.

With the .yft, .ytd, and _hi.yft and handling.meta files it has to be put over the ones of the same name in the vehicles.rpf

I figured maybe I could make it into add-on if I just follow how others are done.

So I renamed the files to aerox instead of faggio, and tried to follow the same structure of a dlc.rpf as another add-on vehicle (making an aerox folder in dlcpacks, copying the other add-on dlc.rpf and using OpenIV to replace the files inside with the renamed aerox files)
I also edited the meta files (inside dlc.rpf) to use the 'aerox' files instead of the other add-on vehicle I was mimicing.
However, there were some lines in the meta files I'm not sure about so I just left them as is.

I was able to spawn and drive it no problem for the most part.
The problem I run into is that sometimes while driving this bike, game can crash. I figure it's those other lines that need a change/removal but I don't know what to change it to. I also was unable to do respray in garage.

Is there a fool proof method on taking replace-only mods and converting them to add-on? I have so many great vehicles I have downloaded and the author's have fucked off years ago from making any updates... I would like to convert them but don't want to waste my time if it's just going to bug out.

@ReNNie Yes I came across that day before yesterday and i remember flying it in fsx.
Speaking of which, is there no opening in gta for a basic hang glider or wingsuits for that matter?

Since the game has parachutes, why is there nothing available as far as a paramotor (parachute with motorized pusher prop strapped on one's back) and/or parasail (parachute tethered to a boat)?

I would think this would be nice to zoom around the mountains and valleys nice and slow without constantly losing altitude, as well as off the beaches, would be nice to see npc's doing it too.
The parasail could use the same ropes as the helicopters have to drop troops, or whatever the tether mechanic is that has been used to mimic Just Cause. But one would have to make it so you can control the boat instead of the parachute since they're not usually controlled independently, and would be hard to do so anyway.