[Rory McNeil]

Thats interesting, both my Jerico DR4`s have a number stamped into the main case, serial number I guess? I agree, it would be best to contact Jerico with the serial #, at least they should be able to tell you what its origional application was, and the gearing it left the factory with. Of course gear ratios could have been switched, and input configurations changed for a different engine, but any info is better than nothing. You certainly don`t want to get stuck with a NASCAR or road race unit. The early narrow gear stuff should be avoided, a buddy had one from the mid 80`s, a couple of years ago, and was unable to get much in the way of parts from Jerico. I don`t know what year Jerico went to the wide bearing version, but my older trans was ordered in early 1990, and is a wide gear unit. Hopefully Jerico keeps parts around for the DR4, now that they are no longer available new.