I am. My 86 k30 came from the factory with a 6.2/sm465/np205 and 4.10s. It runs pretty good. Granny low with a diesel is awesome. My only gripe is that it spins pretty high on the highway (2600-2700 RPM)with my 35" tires. I am planning to swap in a nv4500 to get the highway revs down because this is my daily driver, but for an offroad truck it does great. Also, my truck doesn't do real well in situations that require a lot of wheel spin like deep mud/snow. I haven't had it on any big rocks yet, but I think it would crawl pretty good. /forums/images/graemlins/thumb.gif