I have a 1949 Desoto custom. She's got transmission problems. As in it won't stay in 2nd gear. It has the fluid drive tip toe trans. It starts out fine . shifts into second and go's for a while then pops out of gear with a loud clunk. I have taken it into a shop and it looks like the pump is bad and the housing and syncros also the speed blocking ring. Thats what they're telling me. I don't know that much about transmissions. Anyway We are not finding any parts for this trans. Can anyone steer me in a good direction where I might find parts?. Or someone who can machine the extention housing?. Or possibly buy one in good condition? Thanks