stroking, just post up the specs on the motor. Your not going to sell anything without the specs. Who gives a shit if someone finds out what your running. If you have to be sneaky and build a big motor to win, you've already lost the battle. Build something small and make it run good and it will be way more impressive than some secret setup. I love racing people and telling them its a stock stroke hangin with their 4mil. Then it gets even better when they see the FMF pipes and stock carbs.
- Jared