Thank u nagata, u are the best! I was wondering that nobody will help me like usually when i ask something here, THANKS!
Well, actually after i test the changer, when i click xfg-> cage i get xrt bodykits but all i need is cage and seats O_o
Sadly it doesn't work that way, if I understand it correctly. With this mod (Nagata's Nissan Silvia S13) it seems to work with only "XRG - Normal, XRG -> XRT, and XRG -> XRR" and that is in turn limited to the mod, so as to say if you press the "XRG -> XRT" button the car wouldn't necessarily turn into a XRT, but the car model would change. The "+ Cage" buttons, I have noticed only worked on the original XRG. When I changed the original XRG out to a mod with no cage in it, it did not add one to the car model (which it would do in the case of the original XRG) instead from my experience pressing the "XRG + Cage" button did nothing, and the "XRT + Cage" button only converted it to the XRT car model if there was one.
Sorry for long explanation, also this might need to be confirmed, this is only from my experience with car mods and the GTR Cheanger.