I had one just like it I built long ago. I used a intercooled Cummins and NV 4500 transmission. Pulled big campers for many miles. It was not that bad in tight spots. Of coarse I drive a dually every day work truck. I sold mine for a lot less than $30,000. The problem is it only has enough ac for a single cab and even hopped up, not enough HP. I broke a rear end in Pogaso Springs on vacations in 2010 and was stranded. I had trouble with the pump on a trip as well. It just broke an injection fitting, though. It is still and old truck, too. A long trip to Colorado left you worn out when you got to your destination. I the bought 2012 I have now and man,what a difference. I don’t miss it for sure.
