Can not speak to the way your unit is set up, however I have modified the seat posts in my rig. If you have a seat post on the drivers side and can see where its bolted to the frame. If you can get to the four bolts that's half your battle. I would then go to
https://shop4seats.com and find a post that will work for you. On my unit there were four bolts that held the seat to the post its not a hard job at all.