Given the pricing structure on the '09 Mac Pro, it might be worth creating a thread discussing possible parts that can be used to build a suitable system, as either a single processor or dual processor machine to suit one's needs, albeit running OS X as a Hackintosh.
This thread is a work in progress, so please bear with me, and your patience would be appreciated.
This thread is a work in progress, so please bear with me, and your patience would be appreciated.