The shift motor for a TOD BW 4406 will be located right where the front tank brackets is on 4dr tanks. The only choice for a TOD version, is to use move the tank bracket rearward to the short tank location.
I myself have a dented Sport tank, and want to keep 22 gallons. I have and 1993 tank from my old Limited truck, it's plastic, 22 gallons, and the same length as a later Sport tank. I plan to modify it to mount the later top sensors and the pickup mount too. That may or may not be easy or permanent. I bought a fuel rated epoxy, but have not yet begun the project.
You have to use a shorter tank to have an electric shift BW 4406. I suggest using whatever Sport tank you can get. You might also be able to do what I'm going to with a 91-94 4dr tank. Get yourself a late Sport tank, and install that first.