What I seem to have is a 225 block, heads, and single bore intake with a later model 231 crankshaft, and a Delco Remy points distributor. I want to use something other than the Rochester BC, preferably a 2G or maybe a Holly/Motorcraft 2100 series carburetor, so need to find a manifold that will work for that. I have already spent $750 on machine work having the block bored, the crankshaft turned, the heads and rods reconditioned. So, I want to build it right. Should I go ahead and use the 231 crankshaft that was in it, or look for an odd fire crankshaft? It was running with that crankshaft which I have already invested in having it turned, so I am thinking it will work okay, but before I have the heavy Jeep flywheel balanced for the even fire crank I would appreciate any advice as I am a bit green on these Buick engines.