Iv I play a jap backup or ntsc (usa) backup on pla machine will it work my telly can play Ntsc i dont know about jap Id like to get gran turismo the jap one and winning eleven oh yeah whats the best car game available and rpg game with magic

You'll need your PS2 chipped first with a chip that allows you to play imports. If your tv is 60Hz you can display NTSC games. My personal opinions for best car an rpg games is:

Sega GT / MSR - Dreamcast
Gran Turismo 3- PS2

Baldur's Gate II - PC
Final Fantsay X (not really much magic) - PS2