you can get seats off of a 94-00 acura integra. they give you agjustable back support and they're pretty comfy. they give you the side support you want but won't restrict you from looking out the window on trails.

The sad thing about my back is that I am probly done going on trails and stuff. My back just cant handle all that jarring from the trail. I went hunting the other day and hit  a pretty big hole on the trail to my spot and my back was hurting pretty bad