I have a new MSD Distributor with Alston Cam Drive, my friend who died of cancer, unable to complete project bought it new for $1,833.00 and we will sell for $1,250.00 with free shipping in continental USA. This unit is driven off the engine's cam and it can drive a 2nd unit, like fuel pump, dry sump pump, water pump. This unit has the large head for better ignition timing. Head can be rotated 360 degrees, for info or questions or photos of unit, email me at avantikid@earthlink.net thanks Dave Bloomberg