yeah, its best to get the later model 60e to take full advantage of what the PCM does for transmission management. I'm sure you've seen the topic 100 times that the 60e doesn't last long behind the LS engines due to all the TQ they put out, so keep the TQ management in your tune to prolong the life of the trans. A lot of guys have stripped the 4x4 front drive assembly out and gone 2wd. If you get the right engine mount adapters it will be a straight drop in replacement plus wiring, fuel system upgrade and exhaust system modifications to marry up to your old system. The Dirty Dingo mounts seem to keep the transmission in the stock location, if there are others I'm sure someone will speak up.