You really need to have a mechanic check the engine out and see what is inside as far as pistons and heads, if you dont know the compression ration, you'll be guessing at what you need to run it. I agree, needing 110 is high, unless it's built as an all out racing engine, and from what you say, I doubt that it is. Even the highest octane rating today isnt as good a quality as the gas from the 70's, so you shouldnt chance it till you know for sure. Octane boost is a waste of money in my opinion...you would need a barrel of it to make a difference...if it says it raises the octane rating 2 points for example, that means .2, like from 92 to 92.2....so it takes a lot to make a difference. If you have access to aviation fuel in your area, that's usually at least 100 octane, in my area it's 110...you can mix a little in with your regular gas to boost it up. You're not supposed to be able to pump av gas into a vehicle ( It's leaded) so if you find it, you may have to put it into gas cans first. If you're not driving the car all the time, dont worry about the "unleaded" gas...some will tell you that you need the lead or your valve seats will go away....that's bull and over-rated...in real life, it wont happen in your lifetime, so dont worry about it. But the octane issue could be a problem. You really have to find out what you actually need. Is there a chance your dad has any receipts for what he had done?? And Duane, that was really nice comment in your reply....how long did you have to think about that before you posted?