We use our metris for family trips with four people, a big dog, and lots of sporting toys. We are currently using the 2-0-3 seat configuration and we would like to improve it in two ways. We'd like to be able to slide the 3 position rear seat to modify the rear leg room and cargo room based on what we're bringing with us, and we'd like a nicer rear seat option that reclines at least a bit and maybe has a center drop down arm rest in the middle. I have heard I can unbolt the 3 metris rails that have fixed positions and replace them with v class rails that allow sliding of the single rear bench we would use. I'd do that if I could then buy a more comfortable rear bench and have the flexible 4-5 passenger road warrior I want. Two questions: (1) will the rail replacement work? (2) is there source for a good v class or other rear bench seat that will work with the rails? Thanks in advance!