What tyres your running ? Yoko A032R but soon to be replaced by A048R you must run a 60 profile. what gear box ? gearbox is open diff ? diff is open Glass or perspex ? glass Suspension mod limitations ? must retain factory pick up points, but you can add to enhance such as panhard or rear stab bar... engine must be made by same manufacturer. ie Nissan/Dastun for the 1000.