I'm looking to build another RV conversion and would like to use a Promaster rather than a Sprinter this time. There are none in my area and I'm wondering what the distance is between the front seat cushions. I'm thinking that I might be able to put in swivel seats, turn them 90 when stopped and put a 20-22 inch width table between for eating. It's not possible with a Sprinter. They are too narrow.