I talked to comp cams and crane cams,comp said roller tip only ok with no plates on heads that the pushrod slot fits left to right and has a d shape at the opposite ends ,but no go on full rollers with the needle bearing fulcrum and roller tip,crane said no go on full roller rockers(fulcrum and roller tip) in any applicatoin without guide plates.I am ok with installing the plates and screw in studs ,but my motor is together I do not want to remove the heads and have the pedistals milled,is there a way around this?Longer pushrods maybe?