amazing in car video from the recent concurrent US Major Tour and Formula F the Series races at Willow Springs. Formula F the Series is a west coast alternative available to Formula F competitors that allows Hoosier biased tires and JE forged pistons. older cars have a much easier time running biased tires with the same compound as used in the spec radials. JE pistons are dimensionally equivalent to the spec piston, have been shown to offer NO performance advantage, and cost significantly less the sole source spec pistons.
https://www.youtube.com/watch?v=VU3Zlu582i0