I recently picked up a 1966 C60 and it seems like the syncros in third gear are pretty far gone. The truck has the 327 and a four speed trans. Have to be pretty patient and sometimes double clutch it to get it to go into gear. With a load on the back those extra seconds of fighting the trans equate to a lot of momentum loss! The truck will go ~50 mph if pushed, but in an ideal world I'd like to get 60 mph out of it.
The question is, is it worth rebuilding the transmission or should I be looking around for another transmission with overdrive? I've done a little searching and it seems like the O/D transmissions do exist that would bolt right up, but aren't readily available? The part I haven't looked into is how hard it is to rebuild the trans and/or how readily available parts are going to be for it.
Any suggestions or insight would be welcome!