took the stock 1600 out, and I also had a weak pressure plate. My son helped me put new 87mm pistons in my test engine that I broke 2 pistons in due to spark knock with the dual blowers. for now, it's all stock except for the 87mm and even has stock flywheel. I want to see how far I can push. easy as this is to pull a wheelie, a blower, and nos would make it flip over, lol. this is going to be fun
