2600 4x4 Mitsu engine 5 speed and t-case question

Do the mitsubishi engines still use the mazda 5 speed? I know the 2600 had a different 5 speed from the 2200 and I'm pretty sure that the mazda 2600s had a mazda 5 speed with them but what about the earlier mitsu's? Also, what is the low range ratio on the t-case and did that change over the years?

blump