3 on the tree question

Hello from OH. I'm new to this site--linked here from Moparts.

I've got a 72 Dart Custom, /6, column shift. 38K original miles. Spot free (except for the flat spot in the driver's seat from some old man's butt). She's beautiful.

Looking for some advice...I bought the car w/ no brakes. I figured it was low on fluid or had air in the lines, no big deal. Turns out it was the master cylinder. Still, no big deal. Until I discovered why it shifted poorly (yes I drove it, okay it had SOME brakes after about 4 pumps). I'm guessing about 21 years ago (some time before the registration last expired) the master cylinder dumped brake fluid all over the steering column and, it being a column shift, the shift linkage. Over the years, the brake fluid rotted out the bushings in the linkage. I suppose the linkage would be easy enough to find in a junkyard, but I'd prefer NOS. Any referrals? Anybody ever messed with this linkage?

Thanks