727 guru question...

No. The first thing I do when I take apart a trans is to make sure all pats are compatible. They are MOST of the time, but very often I find mixed and matched parts that are NOT compatible. So, NO, I don't recommend keeping any vb with any case; because they might be mismatched. I get transmissions all the time that are still under warranty from somebody else with mismatched parts. "If it's still under warranty, why don't you take it back to the original rebuilder?!?" ...."Cuz we're tired of taking the mox?er$!<>er back out AGAIN!!"
Likely since I have so much time I'll just keep my eyes open for the correct 727..