After installing a quick and dirty exhaust system to get the truck back on the road, ponied up and had a professional install a nice throaty system. Tucked up nice and tight, clearance for everything underneath and sounds great. It is really a pleasure to drive. Next up, a new wiring harness with fuse panel to replace my feeble attempt to wire it from scratch. Still working out bugs in the pcv system that replaced the road draft tube. Builder may have left out a critical component under the manifold that keeps oil out of the pcv hose. May have to tear down topside and re-install the piece (oil vapor cannister). Engine idles and throttles nicely with the T5. Have  a show to do with the Metzendorf  camper and truck in a week or so in Indy.