A Body Frame Connectors
If you are still looking , try this . Use the 2x3 inch tube and go to home depot and buy a profiler for cutting baseboard trim. Profile the bottom of your car and transfer it to the tube . There will be two spots that you have to add material from the cut offs but after you install them and under coat you wont notice any difference than the bought ones. Cost me $60 plus $15 for the frofile tool and zip discs