Sub Frame Connectors

Roger Ram Rod said
If you install connectors when the car is apart, they say to have the car perfectly level. What I don't know is, what is considered level? I have put a level on my rocker panels, rear floor pan, speaker shelf, and floor hump at the rear, all with different results. What are you supposed to go by?
If you aren't taking the car apart, you are supposed to install them with the weight sitting on the suspension as you would drive the car.. Make sure nothing is jacked up. A drive on lift is the preferred way in that case.

The car should be level, whether apart or together, at least in my mind anyway, lol.. When I did mine, I used the rockers for fore and aft level, I used a straight edge across the fenders (hood open) and across the rear quarters (trunk open) for side to side. And yes, the car should be on the suspension. I place jack stands under the differential and under each LCA.

Most important is to check the doors for opening and closing, if the car is together, before doing any welding.