Frame Connectors?
Speaking of which, should frame connectors be welded in while supported by the suspension or by the frame?
If you don't want to mess with re-doing all of your door fits and body gaps they should at least be tacked in place while the car is sitting on its wheels, with the frame in its "natural" position.
Now, if you want to get into physics and assume that the car probably sags in the middle while its sitting on its wheels, and then correct it to be "true", you should weld them in while its supported on the frame with the frame shimmed to be level and plumb. But I'm sure you know that once you've jacked a car up and supported it on the frame that the doors especially don't always open and shut properly, so you may need to do some adjusting. And doing it this way CAN change the way the car sits on the ground.
I'm sure you'll get some conflicting answers on this one, and I'd be willing to bet plenty of folks have done it successfully both ways...But if its not supported by the suspension be careful to make sure that everything is level, otherwise it is possible to end up with a bent car.
The "bolt in" ones make this whole deal a little easier, you can bolt them in while the car is sitting on the ground and then raise the car and weld them in.
