I saw race gas concentrate on Torco's website. It says it will boost premium up to 107 octane. Has anyone used this and would it would ok in high comp 440's on the trail?

I used it during development and it worked ok. Just remember to use a lot of it. Double the dose and you should be fine. Also, you can get Super 104+ at Walmart and run at least double the recommended amount and it will help. But, all Octane Boosters are a band aid until you get some proper octane gasoline. Also, Klotz Octane Boster run at double strength works good too. You can't use too much of any of them, it just goes out the exhaust with no harm to the motor. Good Luck!