I bought my '93 G9 for $500. and with a few inexpensive purchases she was looking pretty sharp. I wanted to add a rear seat but the choices are slim pickings and pretty darn pricey to boot. Since I own a welder, a chop saw, and a buddy owed me a favor, I cashed it in on a length of 1.25" square tubing and a 24" length of 1" square tubing he had in his shop.
I started off by removing the seat backrests and fabricating a couple of brackets to mount the seat on to. Next I cut and welded the backrest frame and down tubes. A few hours of cutting and welding and she was starting to take shape. Once the framing was tack welded, I removed the unit, added mounting tabs (for the cushions), and finished welding it up. A couple coats of gloss black spray paint and it was off to make the cushions. I bought some vinyl upholstery and some 2" foam from the fabric store and glued and stapled it onto my plywood mounting bases. Before I covered the bases, I used 4 prong T-nuts (1/4-20 thread) so I could bolt them onto the frames when they were done. Last step was to buy two pieces of black pipe to bend and cut for grab handles, then a coat or two of gloss black spray paint. Everything bolted together and with a grand total of $55. spent (and about thirty hours of labor) I had my rear seat. Here are the pics.
Wally
I started off by removing the seat backrests and fabricating a couple of brackets to mount the seat on to. Next I cut and welded the backrest frame and down tubes. A few hours of cutting and welding and she was starting to take shape. Once the framing was tack welded, I removed the unit, added mounting tabs (for the cushions), and finished welding it up. A couple coats of gloss black spray paint and it was off to make the cushions. I bought some vinyl upholstery and some 2" foam from the fabric store and glued and stapled it onto my plywood mounting bases. Before I covered the bases, I used 4 prong T-nuts (1/4-20 thread) so I could bolt them onto the frames when they were done. Last step was to buy two pieces of black pipe to bend and cut for grab handles, then a coat or two of gloss black spray paint. Everything bolted together and with a grand total of $55. spent (and about thirty hours of labor) I had my rear seat. Here are the pics.
Wally