Midnight club los angeles complete edition is good for customizing cars!
I just didn't like the progression system in the game, not enough focus on actual progress(more cars, mods) but it's overall a good game and max 20$ new!
Another one not alot of people think of is...
It's old, vehicules handle very arcade, no free roam, basically graphics/gameplay are very oudated. BUT!!!!! It has a NFS underground style customization but this game actually has REAL LISCENCED PARTS(bumpers, wings, steering wheels, seats, ect...). If you are into tuning your car you will know the brands(ex:bomex, wings west, project top secret, sparco, konig). I think MCLA may also have liscenced parts but I'm not sure...
It has a good car selection(2007 and less) that are mostly imports and muscle cars that are commonly tuned. You could get this used for dirt cheap! The customization was enough motivation to play this game for me but be warned, it is rather mediocre in 2013 standards :D
FRENCH MOTHERF**KER???Do YOU speak it??? No? then bare with me for the bad english because I'm French(Canada :D) and try my best!