Great find! It looks like a PO breathed on the /6, too. The Holley 2 bbl isn't a stock item.
The wheels are cool. I'm interested to see how the 255/50-17s work out for you. I tried a set of 255/60-15s on the Demon with unsatisfactory results. They were too close to the springs in the back and too close to the top of the wheel well in front. I'm running 235/60-15s now.
