If the lines match up and the Ranger beds look right and are cheaper than aftermarket(if still available), I don't see why you wouldn't have interest from others.

You might also consider some type of wiring harness adapter from the Toy harness to the Ranger tail lights as part of the kit to make it a basic bolt on procedure. I know that Mazda used the same connector as Toyota(wire set-up is different), but I don't think the Ford connectors are the same. Also since domestic trucks use only one light for signal/stop while the imports use 2, you will likely have to include the converter with the kit. Once you are done with the swap make sure to do a right up for it here, I am sure others would be interested in addition choices for replacement beds, especially those that live in the Rustbelt.