Octane Booster Questions and Poll

Hello All,
I am in the process of purchasing a Classic 18 Donzi with a 10.5 : 1 Compression ratio 393 Ford Stroker motor in it. I will be fueling it whenever possible at the gas station with at least 91 octane gas.

It may stay on a lift and I would be unable to get the proper gas at the local marina's. My question is there is Klotz and numerous other octane boosters you can add to increase the octane. What experience do any of you have with these good or bad and if so what brand does anyone like? I would purchase a case of something and always keep a few bottles of it in the boat for those occasions.

Thanks is advance,

Cap

Aces

87.3 which is normally the max boost 30 points. Is not near 91.

Unless they have come out with some new thing.

Or it requires mixing $20-30 worth of various chemicals