I try to remember to look on every truck I see, and have only found one.

None on diesels, Ramchargers, 3/4 tonners, etc, finally found one on a 1/2 ton, nothing special, v6 long bed.

Go figger.

To make it better, someone had already taken the steering box, core support, radiator etc off, for great access to it!

Still the only I have run across.