So what will it do if rebuilt to stock specs with the correct carb? Will I fight pinging and just have to retard the timing a bit? There for not getting everything out of an HO like they were made. Am I just looking at running a higher octane? It's not going to be a daily driver, but I want to take it on a couple of 200 to 300 mile trips and not have to worry about fuel. So for that I'm thinking build it to run on pump gas.