Just installed my swivel seat. After reading the other post I decided I was not going to get the one branded “OKG” being sold by Travois. On their website you can find the swivel by Scopema, but it shows as sold out, but they do have the one made by OKG in stock. After going on EBay I found the Scopema swivel being sold by Travios.... go figure. Short story long; the swivel went in easy, had to cut 2 of the pointy guides off, and used washers to raise the tracks so that the “extra bit” did not hit the swivel. Drove back to Sacramento from Walnut Creek with the new swivel installed, and the seat did not shake or rattle at all. I was very impressed.