I ended up scoring a whole frame with both axles under it. I tossed around the idea of swapping the cab and decided I am just going to convert my frame to 4x4 and at worst if it doesn't work I will just bolt the brackets back on the 4x4 frame and swap the cab. Foolproof!
Starting out I marked the center line of the forward most body mount on the 2x frame. Make a score on the frame and then drilled out all the rivets holding the bracket on.
After it was off I welded up all the holes and grind them smooth.(make sure you marked your center line first!)
The 4x front bracket is the same (different bolt pattern) with the spring hanger attached to the bottom of it. So I found center on that and tacked it in place on the frame before drilling all the holes and installing 7/16 hardware.
