ok i kind of need a fast answer here so thanks in advance! Ok i have 71 351 heads with a old style 302 (pre 5.0). Not haters its what i got for basically free so i have to make it work. But with the 351 heads i have no rockers or studs. The studs are screw in. I also have a set of 5.0 screw in pedestal rockers. The girdles will fit between the holes and the rockers will go on without interfearance. Can i use the 5.0 rockers on the 351 heads? Also the cam is a hydralic tappet i think? they are not rollers and they are hydralic. i havent had it together to check push rods but i dont wana go that far and have them not work Thank you very much!