I appreciate your help with the engine decisions. I just have two more questions. 1) Does my stock engine in my '78 have two or four bolt mains (optional 350 engine) - I am asking rather than pulling the pan and looking. 2) Since I represent one of the local GM dealers, I can get the crate engine at cost + 10%. I was told about $2,100 for the 330 hp and $3,600.00 for the 370 hp. Are these good prices or are there better deals out there like the NAPA 383 I saw some people talking about in another post? If my stock motor is a 4 bolt, could I do better by having it rebuilt and built up a little? Thanks again for your input, I am really close to moving on the engine thing but I do not want to regret my choice or feel like to spent too much on this thing.