I like the thought of returning to the original parts setup as long as there is not a distinct advantage with the 11-bolt pump (it sounds like there is not). I like to attempt to maintain a "near original" look. Having said that I have an offenhauser intake manifold and an edelbrock 4-barrel carb on it mostly becuase that is what it came with and I havent found a good reason to change back to the OEM parts yet. So when you change from an 8-bolt pump to an 11-bolt pump do you have to drill 3 more holes in your block? Is changing back to an 8-bolt going to be problematic?