I have a 02 800 EFI ZR and have a Black Magic clutch kit and a D&D kit. My buddie has the same 800 ZR geared 23-40 but otherwise its still stock. I am going to test the two kits in my sled against his. Which clutch kit do you think will work best and give me the most gains? With just gearing his sled kicks a$$. We were at a derby and lined up against anyone who felt lucky and he rocked em every time. After I test the kits I will post the results.