SwedeZ

I'm a big guy at 240 lbs. and the stock cloth seats are very uncomfortable to me. The lower back lateral supports compress my rib cage and the edge of the top lateral supports sit right on my shoulder blades. Are there any cheap fixes out there?

I'm considering replacing the seat with a wider, more comfortable model, but I need something really, really cheap. Used is fine. Maybe a used G35 seat or something?

Ideas?