Where to weld in sub fram connectors?

[alamantia]

Theres a few lifts at my dads shop but you dont want to weld anything on a twisted frame. I need the car sitting on all 4 wheels. I cant get enough room to do it right when its sitting on the allignment rack. Has anyone ever tried it with four ramps?

[camaroAL]

four ramps should be fine, ive done it that way a couple times. try to find the most level ground possible.