I was intrigued by this story in Hot Rod Magazine where they went for bolt-on power on one of them. Never heard of them before.I had one, it was the block only.
It was really old because those were only made in like 60/1.
I decided to sell it because they are worth something to people looking for them.
For me, i prefer cast iron better. Cheaper, and more solid feeling. Plus i don't really care about weight and gas mileage.
How much gas can you really save off of 60 pounds.......really
They don't seem like a great racing option, they appear a little delicate with the thin cylinder liners.