Weird Groove on Converter snout/bad leak
like the others said, unless something wasn't done right on install the bushing should not go bad in that little amount of time. 4 yrs. ago I rebuilt a trans that had 240,000 miles on it and the front bushing was worn but not terrible. Sounds like you have a good plan of attack.
These old cars are a love hate relationship. Yesterday I spent all morning running the valve lash, cleaning the spark plugs and re-jetting the carb then we cleaned our Cuda all up to head out to a cruise. Went to the local gas station to fill it up and when I got in it to leave all I got was click-click. The starter died. Finally got it to catch and got home. I know starters aren't a big deal but I have headers on it and it's impossible to get the starter off without unbolting the engine, lifting it up and removing the drivers side header. And at the moment I'm doing my best to give birth to the 3rd kidney stone in 6 months. Ugh!!