I was flipping through the newspaper one day and saw an ad for a '64 Impala (non SS), supposedly with a 409.
Called my buddy up about it.
A few hours later he pulled up with his 409.
Took the best of both cars and built a '64 SS 409.
Then life happened. It was in the back of a garage for a number of years waiting to get completely gone through. 20 years and 7 kids later, he traded it away, never able to restore it the way he wanted.
Wasn't a four speed (more like powerglide), dual quad, positraction, 409.
I recently saw a 64 SS 409 convertible with all the options sell on Barrett Jackson for just over $100k. My dad had a 59 Impala convertible with the 348, nothing short of a Corvette could beat it and he was sorry after he sold it.
You can’t make those marks without positraction, which was not available on the ‘64 Buick Skylark!