I really gotta do a thread on my build, but haven’t yet so for now here is a quick description of the co-pilot seat. My wife also gets carsick so it was a must. 2001 E450 7.3l diesel, bluebird bus body. I’m cheap. I looked at all the jump seats for sale and expensive swivel mounts and stuff. But, I already have a 2008 Toyota Sienna and noticed that the passenger side middle row captain chair had the shoulder belt incorporated into the chair. So, all I had to do was make some mounts. Basically 1.5” square tubing, angle iron, angle grinder, drill and some bolts. It’s a small platform on this bus, but the seat flips forward, and is easy to just take out when I need it in the van. Super comfortable for the 16400km maiden voyage with wife and 3 kids. I’ll try to get some pics.