Since it's Winter and I have some downtime, I decided it was time to address the seats. They were BAD, lots of sun damage and itchy insulation that would get into your pants... and then there was the half-assed fix with duct tape! I ordered a couple pieces of 3" foam and some Tan colored Duck Canvas with a waterproof backing. I don't claim to be a upholsterer, but tried my best. I figured the end result would be MUCH better than what it was, so I jumped right in.
I tore apart the passenger seat, dumping all but the frame and seat pan in the trash. The pans were rusted out more than I expected, much of the structural support was gone... but I didn't have replacement pans, so I went ahead with what I had.
I cut my foam pieces to size with my electric knife, then carefully began covering them. I moved on to the back of the seat, using carpet padding that I doubled up. It's now about 1/2" thick, much less than the 4" foam that I believe is stock. Using less foam for the back means I have more distance between my back and my feet on the pedals. I mentioned this previously and it makes a huge difference with my lanky 6' 4" body. The work went pretty quickly once I had all my needed materials and hardware.
I'm not totally happy with the end result, I should have rounded the corners of the bottom cushion. As I reassembled the drivers side, the pan was even more rotted... so I went ahead and ordered reproduction seat pans for $60/ea. Once the new pans get here, I'll pull the seat bottoms, replace the pans and round the bottom foam. The material isn't perfect around the edges, but it's good enough for me.
I'm pretty satisfied with the end result!
It's far from perfect, but it's something I did on my own and it's a custom job that makes driving this thing more comfortable! I also have enough material left over to build a custom bikini top with the Duck Canvas, so it'll be great to have a matching top!