I have located a 1967 289 complete engine that I want to use in my FIA build. I need a pre-1974 assembly to get my emissions signoff in Massachusetts. What do you recommend for a rebuilding scheme to get 320-350 streetable horsepower? This is a fixed budget build, so I can'r break the bank on an engine. However, I'd like to make the most of the fact that I have to use an older block.