I have a low deck 400 block and I have been wanting to build a 451 out of it, I have been researching it for a while and I think I know what I am after. If anyone has built one, is there anything I need to know or buy that will make everything work better before I start? Any help will be appreciated, even a list of parts of a working combo would be nice, tell me if I am on the right track. Thanks.