I'm not a metal fabricator. I don't have much beyond hand tools, though I borrowed a drill-press for this project. Nevertheless, I was able to make some crude brackets to mount "new" seats in my 60 today. I used 2X2 inch square tubing (1/8 inch - thinnest the shop had). The seats are from an LX450 I think. Power drivers, manual passenger. Leather, nice upgrade in terms of comfort.
Here are some pics...
Here are some pics...