The original used a special generator that had the pump built into the back of it. I'm thinking that there was a double pulley for the 235 in the early 60s, though. Perhaps a passenger car application.
As to the conversion kit itself, very pricey. I considered it, but the cost (plus the need to add a pump/pulleys setup) turned me away from it. That was 12 years ago, and the price has gone up since then.
