I spoke with Casey Burnett of March Performance yesterday at Good Guys car show in Fort Worth.  Casey told me that they received a Ford y-block engine about 3 weeks ago and are planning to offer a flat belt serpentine system for our favorite engine.  It will probably be two belt system since we don't have a reversible water pump.  I'm excited about this and plan to check in with Casey to see how the design and development is going. He gave me his card and said he would be happy to hear from those interested.  His email is caseyccma@yahoo.com.   It is the right time to contact the company if you have any input.  There was an article in the July 2014 issue of Custom Classic Trucks regarding their design of a new two belt system for big Ford engines. Its clean and fairly simple.  That magazine has been rolled in with another magazine in the Hot Rod group and may no longer be available.