I have a 17 or 18 promaster hi roof long wheel base, I have a factory partition wall and have removed it for space. Need a partition for legality reasons so I'm after one that will allow me to scoot my seat all the way back. Or the one that gives me most leg room. My office bought this truck the other day when I was out of town and couldn't test drive so I was kinda shocked when I sat in it actually how uncomfortable it was compared to my current chevy van, but does ride and handle better, the Chevy probably has more power in my mind tho as well. Keep in mind my Chevy has 350000 miles on it lol. But back to the wall issue I'll take any info anyone has I've done some research on the walls but looks like the best i can get is about 3 inches would that be enough to fully scoot my seat back? Not beyond modifying a partition I buy or building something out of steel or aluminum for the ol girl.