My '73 IH 1510, pretty much the equivalent of a 5500 series Dodge or a Ford F550....unfortunatly only has a 304 gas motor, but is going to be getting an oilburner very soon. Just gotta work out what motor and how I want to do it. I love Caterpillers, but realisticly will probably end up with a Cummins either a 4BT or a Dodge....or maybe a turbo 4 from an Isuzu, Mitsubishi, or maybe ??? Its an all original truck from the original owner from a local International dealer (Ben Funk's) thats still in business...believe it or not I got it for only $800 with a 14' box on it and it only has minor rust on the fenders with 73k original miles