E85 for up to about 13/1 compression and e98 race ethanol above that should make decent alternatives. I got a pm from a guy running e98 with 15/1 compression. Don't recall how but he was involved with promoting ethanol as race fuel.
I just found e98 Sunoco 54 gal drum for 375.25 a guy could use cheap e85 for warmup and e98 to run.

Last edited by gregsdart; 03/31/20 12:21 PM.
8..603 156 mph best, 2905 lbs 549, indy 572-13, alky