My seat cushions are custom made and weren't supplied by Smart Beds. But the box section that they're fixed to has four screw holes, so I'm sure it will just be a case of unscrewing them. I'm planning on making a sleeves to fit over the box section and fitted to the base if the seat, to make removing the buddy seat a quick operation. Your floor rails will be longer than mine as I have existing factory seat brackets still in place. So your seat will slide further forward. Even though yours is a SWB, you may get bikes in and have enough leg room for rear passengers. Time to get the measuring tape out.