Well I am new to this site and new to mitsubishi diesels as well. I've been running dodge cummins for years but with the price of fuel I have been looking for a smaller more fuel efficient truck. I picked 2 dodge d50's with the 4d55. One was a crank no start the other has internal problems. So I figred I would tackle the crank but no start first. The injection pump was bad took it off and noticed the ballance shafts were froze up. I decided to build the engine, pulled it out, took the head off. Two cracks between the injector port and the exhaust valve on 2 and 3.And found water in the oil. I can't seem to find a head ANYwhere in the U.S.I had never seen an import turbo diesel this old that was actually sold in the U.S. let alone find parts for one. Its a neat little truck and would love to get it running so any help would be greatly appreciated.