One wire lock-up, 4 spd automatic w overdrive into A-body.
Good job on welding the entire crossmember to the floor. Add a lot of strength which you really need.
My Dart has 1" torsionbars and a 518 for which I removed the top half of the crossmember in the tunnel.
I hadn't found the time yet to install a reinforcing bar on the outside of the tunnel in the driverscompartment.
I posted this image on Moparts yesterday aswell;
Below is what happens when the crossmember is 'weakened' on top and the floorboards aren't welded to the crossmember...
After I noticed this happening on both sides of the crossmember I also decided to weld the crossmember to floor as good as possible.