Recently had a customer bring in a replacement case for his 4 speed toploader. Looked identical in size etc but had ' ORION " cast on the side with a 7 or 8 number p/n( no letters). The casting quality was not as good as Genuine Ford housings with porosity in several places. On further investigaton I found that the front boss for the reverse idler was positioned approx 0.150" rearwards from the original ford housing. I machined this boss to suit and everything else line's up / works etc. Purely academic now, but I would like to know what it was out of. Some people have suggested Checker Cabs and Jeep's
Jac Mac