I built my own Style Track system using a Moroso 4 Vane pump and a Meziere water pump. Was a bitch to line it all up and make the brackets for the Vacuum pump, but in the end works perfect.
I am using a 2 groove crank pulley and running the vacuum pump off its own short belt.
7800 RPMs, stays on fine.
Kim from March performance was all over it at PRI so I would not be surprised to see something down the road offered from march, but not today