If your going to run a 351 stroked to 427 you have to have real good heads to make horsepower. strokers love to breath. I would go with big AFR's or vic. jr's. I also have a 351 with Trick flow heads and an air gap intake. I love the intake for street use. If I had the hood clearance I would have gone with the vic jr. Also, I'm using an Extreme energy cam from comp cams