FWIW I have an LT77 that came out of my 110. The PO replaced it because of a bad second gear synchro supposedly. I'd let it go inexpensively if you have a use for it, either as is temporarily or to have rebuilt and swap...
It sounds like you're looking for one that's ready to go, but if you're interested shoot me an email or PM.
"I have taken more good from alcohol than alcohol has taken from me." - Winston Churchill