I was wondering if I put in the valves, springs, cam's, base gasket, and a rev box would my Z 400 have the same or close to the same top end as the drz on off road dirt bike? Ive got a 15 tooth front sprocket and a 40 tooth back one (i think) i also have a 38 rear one which i havent tried with the 15 front on. Also my rear tires are 8x8 with small maxxis razr tires so that would factor in the top end part. But if anyone has done this to their Z i would like to know how it goes and stuff!