Need a plan - component selection for restoring 68 340 that runs on 91 oct

Auto X on your previous post, I think I have answered every question at least once and several twice (awfully long thread, I know). But to simplify, everything you can see is original or stock replacement and yes to everything on your list with a very small note that the AVS carb for the four speed is slightly different than for the automatic. Everything you can't see is up for change with the desire to run on 91 SoCal gas and try to get close to 1968 performance. Now will I cheat, yes but I will weigh the consequences. Will I add octane boost if that gets a significant improvement? Yeah but I will avoid it if I can. And it is likely I will do other things as well. For example, the exhaust will likely be stainless but it will have my original tips and of course look exactly original. I will avoid cutting, grinding or drilling anything that would make it really hard for someone to get the car back to original.