Thanks to all for the great advice. I’ve got a lot of catching up to do to answer responses, so here goes...
So, about the control panel. The panel on the grill when I bought it blew off on the way home -- I didn't realize it would come off so easy. It was about an hour drive, so it was far too big an area to go back and look for it, unfortunately (first rookie mistake).
That control panel in my photos is one I actually picked up used off eBay prior to finding this site. Considering the fade, that's probably my second rookie mistake. I just temporarily put those plugs in while making sure the replacement would fit, and I would not be at all surprised to learn that I did it wrong.
One other note -- my grill has three tool holders on the control panel side that stayed in place even after the panel blew off. There are two more on the work table side, and the replacement control panel I bought came with three more. I really don’t see myself needing more than three, so I have five extra. I suppose they might not be incredibly valuable, but would definitely be willing to make them part of a trade for any of the parts I’m trying to find in the list below.
I also have a rotisserie spit, motor and bracket on the firebox, and I have tested the motor to verify that it does work.
Also, my grill apparently has wood slat panels for the tool storage area beneath the firebox. There is no metal rack down there. I initially thought I had multiple side table panels, but I was wrong. I've added some more photos showing my various wooden panels, and in one of the photos I am pointing at a spot where someone added a small block of wood to shore up the rusty metal side bracket.
And one other thing I noticed: on the left side, there is a thin metal flange attached to the top frame rail that runs front to back right beside the firebox. It looks like something would be attached to it, but the wooden slats of the work table that bump up against it don't look like they go with it. I am not sure what that flange is for. I have added a photo of it.
As for parts: The frame itself, firebox and burner components all look pretty solid, although I need to remove the firebox and clean/repaint the frame. Here is a list of what I think I need:
Parts I have been able to find online and with previous posters' help, but have not yet ordered:
-- Warm-up basket (the one that hangs in the lid; I have the one that sits at the back just above the cooking grates)
-- Catch pan holder
-- Catch pan
-- Drip pan and liners
-- 3 tubing plugs
-- eight short flavorizer bars (I have the long ones) Edit: I would be willing to buy a set of 13 though.
Parts I have not been able to find:
-- Replacement metal brackets that hold the slats of the work table together. (My wood slats are solid, but the metal side rails are too rusted to save. Realistically, I could make some brackets pretty easily from angle bar stock if replacements are not readily available.)
-- Replacement metal brackets that hold the slats of the wood panels for the tool storage area together. (Again, mine are too rusty to save, and I could fabricate replacements fairly easily if they are not something that is readily available.)
-- Support rod for swing table
-- Swing table assembly
The swing table is more of a want than an absolute need, but it is one of my favorite accessories for the grill.