I'd try to understand what grade of vinyl and padding are used. You can buy something new and bolt in, but it may not be as well built or hold up over time as well as the stock seat. I like to recover option assuming the frame is solid and using a marine upholsterer that does work for GW. Your dealer should be able to point you to someone in your area. They all sub this type of work out so should have someone. If you do, it will be a copy exact (except for any GW unique stitching).