I've long been sold on the KISS principle. The K-Jet system is flawed and overly complicated IMHO. I am restoring a D that hasn't run in two decades. Would rather put my money into a simple, proven, easy-to-work-on fuel-delivery system. Getting rid of a bunch of those hoses in the engine bay would be nice, too. Hate all that clutter. Removing the spark plugs on the driver's side of the engine is a real chore with all that crap in the way.
Anyway, does Bill have an online store, email, or phone number I could contact him through? I looked, but did not find.