Sub-frame connectors... Please build them correctly!

Installed mine while car was on the lift, all the lift arms were on the front and rear subframe to support it, the suspension is just hanging there, of course we welded them in with the doors on too, everything lined back up with no issues. Welding to the floor deff adds strength, as mentioned before the floor pans adds rigidity by themselves, welding the connectors to the sub frame and floor creates a box replicating a frame. I can jack my car up in the middle or at the front or rear of the subframe connectors and still open and close the door like its sitting on the ground.