Reference points

I dropped a plumb bob off the torsion bar cross member sockets, centered the string on the socket itself. Car needs to be level. For the rear end I did the same off the hub then measured front to back each side and Cross ways lt to rt and rt to lt. My purpose was to position the rear housing before welding spring perches on. If that makes sense. Hope it helps. When I had it aligned, guy said it was pretty square on the rack. I’d asked him to check. Whatever that’s worth.