I just bought a 2012 Prowler 700 HDX with bench seat & was wondering where to get the replacement seat back that is thinner to give me more leg room? When searching craigslist last week someone had one for sale and it looked gret in the pic. He said it would give a person 3 more inches of room. It is gone off Craigslist & I can,t find one online. Anyone have any ideas?