Hey guys, I will start with introducing myself. My name is Matt and I live at the end of Z-max dragway in Concord, NC. I've always loved cars and working on them. I work for a race tean in the engine shop so I'm not a total newb but kinda uneducated in stangs. I own a 91 lx hatch 5 sp with a tfs1 cam, edel rpm II intake, shorties, 3.73 and a few others. My question is I'm getting a set of edel performer rpm heads with 1.90/1.60 valves and I have a comp xe274hr cam just lying around heckeling me, will this combo work with a stock bottom end or will I have to flycut? Just trying to prepare myself for anything. I also know to check p2v on any cam change no matter what "they" say. If I have to I will stick with the tfs1 cam until I can afford to build a bottom end. Oh yeah the car is going to be a street/strip car NOT a DD