[VEHICLE] Can anyone can convert this model ?

[cgz]

I tried to do it, but it's hard for a beginner even with tutorials , I started to detach windows, rename parts and more stuff but sill a lot work to do and I gave up . If anyone of you can make it guys, thanks. It's a gta sa model :
http://www.gtaall.com/gta-san-andreas/cars/20567-chevrolet-suburban-los-angeles-police.html