Backup the following

• GTA5.exe
• GTAVLauncher.exe
• ./update/update.rpf
• ./Installers

Restore them after Steam updates your game to stay on the old version.

Do backup the new version in case you want to update.

SHV is updated.
RTHandlingEditor is updated.

Likely mod authors are busy updating their mods for the biker DLC now.

Almost all of mine broke, so at least wait until my new ones are up.

You do need to keep in mind that all native names starting with an underscore are community-named. If in the future the real internal R* naming is found, the name will be changed to that. So, depending on how many native calls you make to community-named natives you need to update your usage of natives.h every so often.

If you let things build online for whatever reason you can/should just use your current natives.h and update it every so often when people complains it won't build for them

You can't properly import maps to GTA V just jet. There's a tool in the making for this. Only alternative is FiveReborn.

There is no Mad Max world model available, so if it's made, it's need to be made from scratch. This can take a very long time, depending on available resources (human, computer models).

Would this be possible? Sometimes I like a comment but figure it's a bit overkill to just reply "Thanks!" or something.

@SerranitaMods
Hey, I managed to make a driving box without wheels for GTA IV once upon a time!

Some script mods relying on memory editing might not work.

In particular, for my interests, my scripts...

@GTAVModder4Life
The VisualV author used some non-functional self-made values for exactly this kind of thing. These entries appeared as-is in Redux.

http://gtaforums.com/topic/868752-gta-v-redux-discussion/

Edit - It was custom weathers that gave it away.

@rappo
I can understand that, thanks for considering!