Mazda/Nissan Heaven maybe? There's bound to be a low mileage Miata in the Junk yard somewhere with excellent upholstry on the cheap. Most upholstry shops I know of were going to cost me an arm and a leg to replace the cloth on my previous car. While it would require modification to the seat brackets, the RX8 seats came a lot closer to being the same size to the NC than the previous generations of Miatas. They also were a lot more comfortable.