ovraok, he was asking about swapping out internal parts into his same R151F case. Doing this lets you keep your 4 cyl T-cases and still fit the 22RE.

You are correct that a R150F from a 3.0 V6 will not fit the 22RE or the 4 cyl gear drive cases unless you get an adapter. You CAN put those guts into the R151F cases no problem though. Exactly what I have done. Later when I did my 3.4 swap, I swapped on a 3.0 bell housing so it would bolt up to the engine.