Decided not to build up a 350 motor and Im just going to put the 307 back in my 72 chevelle. My buddy talked me into putting a new cam and lifters in it. What is the stock specs on a 72 cam on a 307 and what size and type cam should i go with? The Summit cams seemed like a good deal.Nothing else in the motor will change but I will put duel exhaust on it and a slightly larger converter.