I can tell you this for sure...the tune up between AV gas and race fuel is different. I had a customer that would buy AV gas when he could get and and race fuel when he couldn't. Drove me nuts. I told him to **** or get off the pot and pick one.
Where are you getting it? Aurora used to have it, but not sure he is even still alive...can't remember his name...was an MFI guy. Kind of eccentric. Had 2... Or 3 Mig fighter jets and a non English speaking Russian national to work on the.
Damn, I'll have to call some one and get my memory jogged.