I had a th350 in my bird when I bought it, though it originally had an st300. It appeared to be a straight swap except for the kickdown. I had to manually downshift, but I'm sure you could hook the cable up somehow. I have column shift. 1st gear was just below the 'L'.
It takes the same crossmember.

I changed to the 200-r4. It takes a little more work. Worth it IMO, but I also changed my rear gear and have a 6cy. I had to modify a 400 crossmember.