I broke my last 3/4" heim on my trianglated 4 link in the rear. I want to go to the 1 1/4" and will have to make another upper control arm. Can I tap directly in 1.5" .250 wall DOM with a 1 1/4 "x12 tap? Does anyone know what the ID requirements are for the weld in threads? Not sure which way im going yet.