HMAN, Yep seen plenty of Jims 6 speed cases with Baker guts.
stlmike, depends on the year I have seen both 5 and 6 speeds. The 02 I just worked on had a 5 speed.
I have been told by a few that the Jims transmissions are made under licence from baker....By looking at the parts they sure looks like the same stuff and I have built a few that were marked Jims but had baker parts inside.