Who makes the best boost and where can you get it? I had to put crappy 89 Octane in at the marina. I need to boost approx 40 gal to 91 octane or better.

Octane boost wil lnot work. You need to mix with 110 or Toulene. Do a search no this forum for info. This has been discussed before.

Yup

TORCO makes product that will do what you need.

My engine builder told me to use TORCO octane boost only if I could not get any 110 octane fuel to spike my existing fuel with. He told me that TORCO is the only octane booster he trusts.

I have a 55 gal drum of tolulene, your's FREE if you come and get it. Near philadelphia.