Here are a handful of pics to get you rolling, Tim.
The original idea was to snap a few pics for your use and then as I got into the swing I got sidetracked by the zillion things that seem to need attention.
Firstly, here's a pic of the passenger side forward mounts. Sorry about the quality but you get the idea.
The mount nearest the fuel tank inlet.
Photo taken from passenger door of how the rear mount fits on the driver's seat. That little chained clip is what you've replaced with a cotter key. Coincidentally I found the little fart that's been stinking up my cab. The PO had a bottle of some kind of miracle odor neutralizer in the glovebox. It didn't work miracles though on our pall mighty mouse.
Friends, we are gathered here together to witness the interment of our friend the rat bastard.
This pic is taken with the driver's seat leaned forward and that's the outboard rear seat mount you see partially obscured by a homegrown speaker box.
Driver's side underseat tool box.
Another angle of same.
A few of the seat. Don't know what that dimple is for in the front frame bar of the seat. It's threaded though, IIRC.
A closer pic of the mounting hdwe for rear of driver's seat.
Rear mounts attached to floor for driver's seat. This works as a quick disconnect and the driver's seat can be removed in 15 seconds without tools.
And an angle or two of something you didn't ask for. This is the trim that goes around the inside of the rear section of the cab and trims out the windows.
It's made of a pressboard material with the standard familiar pattern on the back and a different texture on the exposed side, sort of like some ceiling tile's irregular texture.
My camera truly sucks. That, or I need less cafiene.