ive been getting the itch for a lil more power for my car... and ive looked into a set of roller rockers for it. i know its not an optimal choice given the modifications that the car currently has, but i have an impulse buy feeling right now and i want something lol. question is.... if i get the 1.7 ratio roller tip rockers, will i have any piston valve interference?? ive been told a full roller wont fit under the valve covers i have now and a roller tip rocker arm seems to be the only way i can go for now. im fine with that but i dont really want to keep the 1.6 ratio. i figure i might as well go for the extra lift. i just dont want any kaboom. the engine is a 69 351W with pedestal mount rockers. originally a 2bbl car so i know th pistons are dished.... so will they clear?? if so i shall order them they arent in stock at the local speed shop at the moment...