The pistons and bore were not changed. I cant remember what cam i used but i did remove a crane fireball because the car fell on it's face for the first part of the quarter.
I built A 72 318 and used 360 heads. At the time I was told it couldnt be done. I put it in A 73 challenger with 727 manual valvebody 2500 stall converter and a 391 gear. It ran a very respectful 13.60 quarter mile. Not bad for the late eighties!