Sorry for the 351 post but I couldent find my answer. I have dibbs on a Free 1968 351 motor with reconditioned crank and rods with forged pistons. the heads are stock with a valve job and new springs. the motor has never been put together. The shortblock was rebuild in 1975. So the motor probably has to be run through again by a machine shop. I think this is a good deal. Heres the question. What year did the 351 start coming with 302 heads? if the motor is a 68 will they be actual 351 heads? Also do the make a Edelbrock rpmII lower that will fit the 351? thanks all