US Car Tool Torque Boxes and Sub Frame Connectors Install

Fully welded or stitched is fine. I fully welded mine and seam sealed everything to keep moisture out.

Just make sure whenever you're reinforcing the chassis, that the suspension is carrying the weight of the vehicle when you weld them in. That will help to prevent unwanted flex. I've seen guys weld them in while on jack stands and the car had a "lean" to it and didnt drive straight.

I used my tall race ramps so that I could set the car on its weight, but I still had room to work and weld underneath.

Good luck. Chassis reinforcement is a good investment IMO.

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