To handle the coilover loads, I'm thinkin, "S&W's Race Cars" #13-350,(front sub-frame supports), DOM.13/4" od. x .120" wall, 46" L on horizontal run, 17" long on 45 deg.,down-leg. $85. pr.If I go 8 point cage,(first choice), I'll butt-weld these to load spreader plates, on firewall, and weld to fenderwells/shock mounts. I savvy needed geometry, on the order of 20% anti akerman,(road course work). Tubular upper arms have positive caster built-in.A arm supplier said "stockers can't get enough". ateam.::thumbup: