is there a way to convert a 7 seat 2005 Chrysler Town and County with stow and go seats to an 8 passenger vehicle.

no, you cannot safely add another seat to that vehicle. you need a full size van for that many people.

We have a 2001 T&C Limited ...and got a 2002 T&C Touring 3rd row "center-split" bench from a junkyard and successfully put it in 2nd row. There's a buckle with strap in the center, and buckles on the ends to accept the shoulder straps that pull down from the sides. Our 3rd row is not split, so it was nice to have the split on the second row so we could fold down each side independently if necessary. There's also about 8 inches gap on ends so kids can actually scoot into 3rd row without folding down seat. 2005 T&C came out with stow and go, so you can only swap these seats out up to 2004. I think this is common for all these different makes of minivand, to be able to swap seats. There are many commenters out there that say this is impossible, or its unsafe. I can confirm that it IS possible because we did it. As far as safety, this arrangementioned of 2 bench seats I'd no different than many SUV's out there, you just need to fold down one end of second row to access 3rd row. All seat positions have seat belts. The only negative to safety in my scenario would be that there's only one tethering hook for child seat on each side of bench. My understanding is that the bench is meant for Rd row and the tethering straps would typically be hooked to tetherING hooks on the back floor of the minivan. You can still use the seat belt instead if tether though. Another note...I don't thing there'd be much room for a child in the center of bench if you had 2 car seats. I've done this in the back row and there was very little room at center position. 3 booster seats is also tricky because the boosters end up covering the buckles. Anyway, hope this info helps some people out there.