I would too, IF I HAD A 400 to use, I'd use it. But this guy is considering sourcing or looking for a 400. IMO, if you don't have one, just stroke a 350. Even when he does find a rebuildable core 400, they can usually only go .030 over and done, where as a 350 you can bore, .020, .030, 040, and even .060. So if you broke a ring hotrodding and scored a cylinder, all is not lost either. I just see many more advantages to a stroked 350 over a 400 for the additional cubes. You're also going to get more rpm out of a stroked 350 with a 5.7 rod vs an OEM short 400 rod. 400's don't scare me, but for this guy here, I'd highly recommend the 383 over the 400 in his situation of not currently having a 400. Besides, when he does fine the 400 someone's going to think they have gold and want a nut and a leg at least below the knee for it.