Fabrication is a whole lot easier when you can just pick up a pre-made piece and weld it in place. EMPI now offers a large selection of items to help you out when you're setting up a new chassis or just re-working an old one. The radius on all tabs is made to accommodate 1 1/2" tubing.  90 degree formed gusset sold in packs of 4.

EMPI # 16-1143-0                   C4V