Video - DP-Tuner Install
This is a video on how to install on an f series, the van is similar. On the van I had to remove the bolt that holds the oil fill tube and push it out of the way. Then one 10mm bolt for the harness and 2 10mm bolts for the pcm and you can pull it right out through the front.
Try
ITP Diesel, L.L.C. for the a pillar and gauge package.
If you decide you want a 4" exhaust,
www.warpspeedperformance.com. Very reasonable, I may get one here soon.