Kemco's Octane booster is $20.75 a quart.
32 oz in a quart and they rec 8oz octane boost per gallon. At that rate a $20.75 bottle will treat 4 frigin gallons! That raises 93 to 101 octane. (8 pts)
Same amount boost in 8 gallons will raise octane from 93 to 97. (4 pts)
One quart Kemco boost in 16 gallons will get you 95 octane. For $20.75?
There site says "will get 2-16 point increase in octane" If you use a full quart for every 2 gallons you'll get 16 pt octane improvemnt.

The local Speedway sells Race fuel. I think 110 octane. I just fill a 5 gallon can and add it to my tank.

My street 383 runs just fine on BP (Amoco fuel)premium. I put a few gallons 110 in once in a while anyway. Maybe waste of money but it's not $20.75 a quart.
Talk to your local speed shops I bet they know all the local places the sell Race fuel other than a track or airport.

It seems ALL octane boost is a waste of money.
I guess if you carry a quart on Kemco boost in your trunk it might be of use in an emergency. Like the only open gas station only has 87 octane.