I looked at one a couple months back... The width of my van (2003 Pontiac Montana) middle row is approx 50" (3 seats) from outermost edge of Britax Marathon FF, center Graco SS, Britax Marathon FF at the front edge of the seat). I *believe* that the measurement from the edge to the edge of the rear of the Dodge/T&C was 40" or 42" at the front edge of the seat. (where my Marathons are widest). There was NO way to make anything fit... even 2 boosters and one of the above seats
we decided against the van purely for that reason... 5 kids, 5 seats. and if we bought the van I would not be able to afford to get all new seats to make any different puzzle configurations...
OH and the latch location(s) were centered... not outboard like in my van... I can't remember if there was 1 or 2 latch locations but they were like you would have to put the seat 1/2 on outboard seat belt area and 1/2 on center seat belt path area.
I know my descriptions aren't great, but I hope you get what I mean LOL