In general there is so much wrong with the body kits in GT5, selection, function, you name it. There are several cars that I have wanted to tune but never did because it would be lacking a good body kit (I like the cars that I have worked on to SHOW that they have had work done and be discernible from their stock counterparts). I have my parameters for tuning, must have at least one stock car aside from the one that will be worked on, must always get the full suite of mods (I wont just do one piece of the mods, like add a turbo without doing anything else, it has to be the entire kit, if I mod a car for a race but without intention for a full tune like I did to one of my Gallardos for the Gallardo trophy, I only use pieces that can be then removed from the car after they served their purpose), and it must have a good looking kit to let me know that it is in fact the tuned car. Is it a bit strict? Yeah, but it keeps my garage organized and free of cars that are haphazardly modified. I wish GT5 gave me more options.