Thankyou gentlemen ...
Have a seized one in the C60L - replacement supplied by seller, but was considering using one out of my C15A as it is a known functioner - and also one bolt is sheared off in t-case supplied (will drill and retap or swap with old case section).
Will stay with original - now that I'm aware of the 2-speed factor - will be no harm and a good learning curve for me to pull the old one apart once removed from truck - and shorty stays intact.
