Originally Posted by UN4RACING

I would start with a 17p. Build the diffs with all 6 shims on the gear side and over grease the diff gear with 5 spots of Ae diff grease. It will break in and free up pretty quick so if it feels tight don't worry. The diff gears will hold up longer with that kind of nuclear power your running. Start with the kit set up and add the 87gram ballast between the packs. Should be all about tire selection from there. If the track is loose then run the B option hub and the inner top deck ball stud hole. Good luck. Keep us updated on the build....