Customer we buy engines from wants to put a dot 4 (no lifter covers) out of a 1982 MF 550 combine into an early 2-105 with bad engine. Water pumps not co-operating, what other difficulties is he going to run into ? Also I'm looking for something in the 1850 power class, what does the guy want out of it, and do you know if it has dual speed PTO ? If you want call me at home tonight, I should be home after about 7pm.