Texturing Help for vehicles

[toasty_ 10]

Okay, so I want to retexture binarized cars from a modpack to look like police cars, what is the easiest way of me finding out where I need to put the design on Photoshop, because the ones I'm looking at are just red bucket overlaid but I need to know where the bonet doors roof etc are.

 

Thanks.

[x3kj 1247]

do you even have permission? I bet you dont.

[Bnae 1431]

If you have permission to create and share custom textures go ahead and ask for UV maps to help finding edges.