I finally finished up the bracket. Because the two different pieces of metal were of two different thicknesses it made it very difficult to weld them together because the thinner metal kept wanting to burn through, but I eventually finished it.
After I finished with the bracket I hung the driver side rear door back on and started looking into which latch I will be able to install. I want to put the bigger latches because I feel they are safer, but the smaller latches may be required because of space. Both are safer than the original style latches, however.
The doors will have to be cut for the new latches to be installed and the old equipment removed. Though I have been against cutting the car as much as possible I don't mind this because of the added safety.