There's a ton of aftermarket brackets out there, depending on the seats you choose and how much adjustment you want fore & aft. You may have to modify them some to fit your specific application, but places like Speedway, Jegs and Summit all list several. Here's a link to Summit that popped up with a Google "Seat Brackets" - Seat Brackets at SummitRacing.com: Original Parts Group, Goodmark, Scat/Procar, Smittybilt & more Some of the "Universal" brackets should work for what you're doing.