There's several aftermarket seats out there like Wiseguys, Glide Engineering, Teas Design, etc. They tend to be pricey, so if you want to go a less expensive route you need to go to places like Pick-n-Pull or other auto bone yards. Measure the width of your stock seat and then go to the wrecking yard with your tape measure in hand. Look at the bench seats in late model vans or mid sized four door sedans. Many times you can find a seat with excellent upholstery on it(some even in leather). As an example I wanted a better seat for my 41 Ford pickup. Went to Pick-n-Pull and found a seat from a Windstar van that was perfect size and the upholstery looked almost new. Bought the seat for $55. If you find a seat with the seat belts attached be sure to ask the price of the seat belt. Some of these outfits hit you real hard for the seat belts. If you don't need the belts remove them before paying for the seat.
