Unless you are prepared to buy and blend 110 octane, forever, and limit traveling with your car to routes where you can readily purchase this fuel, you may not want to precisely duplicate the original build. If it's just an occasional cruiser and fuel is readily available, then go for it, but be aware of the repercussions if you do encounter detonation, and its effects.

Given that the car is a clone, if it were my build I would design for 93 octane and give up a few horsepower to have the freedom to drive it.

And with those Speed-Pro pistons, you won't have an exact build.