Will a 3.0 bellhousing from a '91 or '92 ranger with the better 5 speed bolt up to the old weak 5 speed in an '87 ranger 2.9 5 speed? Or what would it take to put a manual transfer case from the '87 behind the 5 spd from the 3.0?
No, the bellhousings on RBV manual transmissions are not removable from the transmission.
If you want an M5OD behind your 2.9, it MUST be from a 4.0.
the FM145 & 146 do have a removable bellhousing
Did you read my post at all? The 3.0 trans will NOT bolt up or work at all. Even if it did, yes you would have to swap output shafts. They're different lengths and I'm 90% sure they're different spline counts too.