Mike, version 1/the original and version 2 are the same except with the addition of gussets and a sleeve incorporated after I broke/bent the passenger side arm.
Version 3 is not legal for stock eliminator and the one I had been running for the past ~5 years
Version 4 is the latest, developed a few years ago and the one that Alf is selling to stock eliminator racers now as a result of the issue with Kevin Borgstrom's car last year in Division 5.
