I made my own, I took the existing seat off of the base, I then used 2 different sizes of angle to mount them. If I remember correctly the passenger seat needed a larger piece of angle to center the seat over the existing base. The angle went up the side of the seat and was bolted together, then I just bolted it to the base. It was a little bit of work getting it all together but worked great and saved me some coin. The seats still slide back and forth just like they should. If you take your existing seats off it will all start to become clear what I am talking about, hopefully. If your ever in Ogden you can give me a call and come check mine out if you'd like.