First, thanks to everyone on the forum for taking the time to post and share. Y'all were a massive help and inspiration in my build.
2015 XLT LWB, medium length, high roof, Wagon
mobile office that I can work remotely from during kiteboarding season and take the family on adventures during the off-season. This is also my daily driver/kid hauler so it had to have a spot for at least 2 car seats. much of my inspiration came from https://saraandalexjames.com/
first van build. I wanted to have windows all around so we can see the scenery when camping/eating/sleeping and a soft water resistant floor that would feel good underfoot and not get ruined by many wetsuit changes.
After much searching on https://www.cargurus.com/
I bought the van used last winter in Colorado and drove it back to California. Car Gurus was one of the only used car sites I found with filter options for the transit that let me narrow my search to the exact options I wanted.
1st step was to take all the seats, factory floor and ceiling. I then covered the entire cargo floor space with Butyl Automotive Sound Deadener. I found the easiest way was to stand on a wooden dowl or metal pipe to roll the product out. The little hand roller would have taken forever.
(Product i used https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
using 3m 90 spray adhesive (save yourself some trips and buy an entire case at home depot/lowes) I put a layer of thinsulate (bought from hein's web site) between all of the roof ribs.
then I put closed cell wood floor underlayerment layer ontop of the Butyl Automotive Sound Deadener (home depot). This was meant to decouple the first floor layer with the next layer, mass loaded vinyl. I put the mass loaded vinyl on next making sure to cut holes for all of the factory seat rail bolts.
I used the factory floor as a template to trace the floor patern onto plywood and then marked, drilled, and countersunk the holes for the factory seat rails. I used the factory seat rail bolts to hold the first layer of plywood down. I put another layer of plywood down so I could use more robuts screws attaching items to the floor and because 2 layers of plywood, soft foam gym floor tiles, and a vinyl floor would end up being the perfect height for the factory trim pieces. I also installed a Swivelsrus Seat Swivel on the passenger seat.