Speaking of AC:
The AC was the worst maintenance problem that I had over the years with my '68. I drove it daily from '69 to '83 and recall having the AC repaired virtually every year. It never had a charge when the next summer rolled around and each attempt to find leaks just ended up being leaks in my wallet.
Plus, being a black topped convertible, it would never get real cool like today's cars. Pulling out of the garage in the morning, it would be relatively cool driving to work but after a day in the sun, forget it. On multi-hour summer trips, at full blast I would never feel real comfortable. Note, however, that I like cold. I like 60's more than 70s, 50s more than 80s, 40s more than 90s, at 100 degrees I question the meaning of life.

Now, the AC is "originality decoration" on my car. I only drive on days I can have the top down. If it's cold or real hot out, it usually stays in the garage.