I too have a Buick. It's a 71 Sportwagon. I bought a 1200 to "learn" how to work on cars, then I would go on and fix the Buick.
That was 12 years ago. The Buick is rotting in my parents backyard. The 455ci/7.4L is in my garage...and thats about it. I should fix the wagon, as I want a cool family car.
My addiction is trying to figure out how to repair or modify the 1200(or any car). I could easily take the car in tomorrow and have the bodywork fixed and painted...but I want to do it.
I could easily take this car in, drop off an A15/KA24E/SR20DET and say go. But thats not fun, I want to do the sorting and figuring out, and when I'm done fiddling in the middle of the night and turn the key with my bleeding fingers....thats what it all about.