[tommr]

Have not done anything Bill aside from the last body lighting harness and conversion to all LED lighting last year. Engine conversion is not possible until rear suspension and axle can be worked out. Rear axle is unserviceable as there are no replacement parts available. The very short driveshaft requires everything in the back be laid out as a unit to achieve acceptable driveshaft angles. More pressing is front suspension and axle. Needs complete replacement. All tall order stuff. Our last big trip was Myrtle Beach SC. Did 625 in a single day. The 401 with overdrive allowed speeds up to 65 mph @2200 rpm and delivered 8-9 mpg. Previously speed was pretty much limited to 55mph @ 2900 rpm. Motor has a lot of miles so keeping it under 3000 pm made sense. Leaning towards a Duramax. GMC is re entering the Medium Duty market in 2019 with the 4500, 5500 and 6500 Silverado. There will be an air brake option on the Class 6 6500 Series trucks with an engine driven air brake compressor. The 8.0l gas engine had air brake compressor mounting brackets available but Duramax did not until now. You kind of need that factory engineered mounting system on these serpentine belt drive systems for reliability. Not all that simple to devise your own mount system. In the old days of separate V belts stuff like that was fairly easy. In all bus needs tall order stuff to keep going. In the meantime its collecting dust in the warehouse. Tom