Apple Xserve (Early 2009): Has anyone installed PCIe SSD in PCI-E slot?

I am reconfiguring a working Apple Xserve (Early 2009) [Xserve3,1][model A1279][MB449LL/A] which does not currently have an SSD installed, neither the factory 128GB SATA, nor any aftermarket. I'm planning to replace the standard 3-drive SATA *Drive Interconnect Backplane* with the Apple *Xserve RAID Card*. The fans howl something fierce, so I plan to replace the *Fan Array*. I also plan to replace the single processor *Logic Board* with the dual processor *Logic Board*. It seems to me that performance would be better, and overhead lower if I install a current generation PCIe SSD in the *PCI-E Riser Card* (ie, PCIe “backplane”), rather than install an Apple circa-2009 SATA SSD (which connects through the Front Panel Board). Has anyone successfully installed a PCIe SSD in an Xserve *PCI-E Riser Card*?