@ GordandFran - I bet they were! I hadn't thought of that. He had a couple of Redneck Ingenuity items (like a box with blades, that aren't sharp, that run off the PTO. We're assuming for dispensing feed, but no one, even here, knew for sure). Searching with the word 'aftermarket' may just do the trick. Thank you!
@ Phak1 - I'll have to take one.