Coilovers?????

Back in the day(late 60's, early 70's; little $, but tried. I have broken so many cars). But then got a job at a roundy-round shop, learned chassis and suspension more than I could get out of a book. No depending on sheet metal.

The chassis is one, from the rear bumper to the front bumper. And tons of gussets and triangles. Minimum of bends, weak, unless you want to add more triangulalation=more weight. Taking that to drag cars; add the roll structure/stiffening to the rear first. Main hoop braces angled down to front of rear spring mounts, main rear bars to rear trunk.

Hoop; add under-floor supports, with 2 diagonals to sub-frame connectors (or back then, just a real frame). So far, no bends. The front is harder; hoop bent, halo bent, a pillars bent. But from the a pillars, right at the under-dash horizontal bar; straight into engine bay, and that requires a another bend.

But you have no choice, There, the triangulation is important; halo protects driver, front is tying the car together. then under rad loop, and the boss always wanted x-bracing around the front coil-overs side to side(now it is a major botch to work on the engine) but boltin tubes are legal now.

Hope this kinda helps.