Pat are you in Bay city texas. There is a big fast track in sweeny correct. As far as the bottom end I was told it has H beam rods but do not know the brand, also dont know the type of crank. I hate saying I dont know but its true. I bought the motor on a whim and for a decent price I belive. I might be better off having a motor built then I would know. I guess I could put the heads and such on there and see what happens if the bottom end cant handle it and it goes down atleast I would have the top end if it was not a catastrofic failure. Are you an engine builder. I can tell you know about the engine but I guess what Im trying to say is will you build an engine for someone. Maybe that will be a better option is to keep running what I got and build a new motor to have a spare in the shop. Being that I am really hard on a motor this is my 3rd one.