Update.
I added the E-98 to my junk E-70? and got it to about 77% Ethanol.
First time trial was best, Car weight #4,179 lbs, 27x10.5 MT ET Radials, stock suspension with pinion snubber. Bandimere altitude, but I don't have a weather station to know DA, maybe 7,000 ft?

R/T = 0.007
60' = 1.849
330' = 5.003
660' = 7.619
MPH = 94.16
1000' = 9.886
1/4 ET = 11.803
MPH = 118.08