So..... The E85 not so great, BUT... I don't think it was the fuels fault, the carb was simply not right, a combo a Barry Grants lack of carb prowess & the shop that converted it to E85 missed it a bit.

Anyhow.... here is same tune, 39 degrees on race gas, Dominator with just a header change.... this was the TTI copy 1 3/4" to 1 7/8" customs with 3" collector. They look virtually identical to a TTI 1 7/8 W2 header.... I was real surprised to see how well they worked compared to the sprint car dyno headers.