As some people know, AEM rebrands a MAC valve to use as their boost solenoid. For reference, the part number used is 35A-AAA-DDBA-1BA, and if the person you talk to asks for a modification (or modif) number, tell them there isn't one. I bought one from Skeans Engineering in BC for $25.93, plus $2 for a sintered bronze silencer, and $17 shipping. Better than the $100 that AEM charges for the exact same thing.
Mac Valves Distributors: http://www.macvalves.com/distributors/mdn.htm
Mac Valves Distributors: http://www.macvalves.com/distributors/mdn.htm