Anybody have any idea what model/style Berkley Jet they would have put on a 1978 18 1/2 DiMarco?? Has a 460 Ford,a top mount starter and he say's it has almost like a "bellhousing"? It blongs to a guy I work with and he say's there is no mosel number tag on it..... He say's it has a tag that has a couple of number's....but I dont know if they tell anything...They are  "M-2128" also has an "H-2155" does this tell ya anything? I thought it would have a tag that would be like a "jg" or "je" or somethin' like that I have not seen the boat and he's tryin' to figure this out...Any Help??    Thanx,Tracy

The "H-2155" is the casting/part # for the rounded keel intake for a JC or JG pump. Couldn't find "M-2128".
Sounds like a 460 on three point mounts powering a "conventional" JC or JG pump. If bowl is one piece with integral steering nozzle zocket, it is a JC. If bowl is two pieces where the nozzle socket bolts to the bowl, then it is a JG.