My first car was a 67 Merc Caliente. It got a burned valve at about 180,000 miles and I sold it for $300.
Then I got a 68 Impala with a 327 small block. Oh...yeah.
Wasn’t my first but I had a ‘67 Caliente for a couple of years. This was in about the ‘78 to ‘80 time frame. The vacuum booster for the brakes went out. I priced a replacement diaphragm which was well over a hundred dollars,
so I cut a 99 cent beach ball in two and it worked fine until I sold the car. I gave the guy I sold it to the other half of the ball.