many people do it. like I said, only gonna crank it to 15 psi when I race. the 200-250's are comfterble between 6-12 PSI, but most people who run them TC'd crank to 15 psi when they need to, as they will take it. 1 200 powered drag mustang first ran in 1981, used a T 60 Turbo, draw thru, a 600 CFM holley, cranked up to about 30 PSI on race gas and went 9.85, engine was producing 450 HP, that motor is still in 1 peice, and other than the turbo and some minor machine work, it was a stock engine, other than a diffrent casting head, eventully he did upgrade to aluminum rods, but just to make the car faster, original rods were fine when he pulled them. check out www.fordsix.com/forums, you'll see what I mean.