Subframe connectors
You MUST have the load on the wheels. The guys saying weld them in with unloaded must not have used a hoist more than once in their life. Literally can see your door gaps change as it lifts car up. I had a holden monaro that is a chassis car and passenger door wouldn't open on hoist.
I built a tall timber frame that i sat car on and just dropped the hoist slightly lower so car unloaded.
Also i stitch welded my connectors as to not put too much heat in and avoid blowing holes in the floor. My engineer actually specked that i dont seam weld them on.
You MUST have the load on the wheels. The guys saying weld them in with unloaded must not have used a hoist more than once in their life. Literally can see your door gaps change as it lifts car up. I had a holden monaro that is a chassis car and passenger door wouldn't open on hoist.
I built a tall timber frame that i sat car on and just dropped the hoist slightly lower so car unloaded.
Also i stitch welded my connectors as to not put too much heat in and avoid blowing holes in the floor. My engineer actually specked that i dont seam weld them on.