well ive heard alot about the 383 stroker.. never built one myself.. from what i was told its just a 350 block with a 400 crank in it and some good heads... now the heads that are on the k5 already have 1.94 , 2.02 valves in it. but what im wanting to figure out mainly is would i be better off just trying to run this motor and beef it up . or should i try and go have someone build a 383 stroker? w