Thank you guys for the information!
rmp.dmd1229, I'm sorry for hijacking your thread, but hopefully it will be mutually beneficial.
Following the posted steps and a little bit more, this is my current progress:
Phase 1 "Re-build Stock System"
- Removed all the WD5000AAKB HDDs and set them aside for Phase 2!
- Pulled two 1GB DIMMs from the system and reseated the last 1GB DIMM.
- Found the stock drives stacked on a shelf

- Set the stock WD1600BB HDDs to "single" by removing their jumpers.
- Inserted one stock WD1600BB into bay 1
- Started the system (Cold Boot)
- Set the system to enter Recovery Mode on next boot. ("touch /nopivot")
- Reboot (Warm Boot)
- Preformed a fresh install of GOS 5.2.056
- Reboot (Warm Boot)
- Applied GOS 5.2.056 SP1 update
- Reboot (Warm Boot)
- Confirmed everything was in working order and checked the Event Log.
- Shutdown the system
- Performed Quick Erase with WD Data Lifeguard Diagnostic 5.04f on stock drives 2, 3, & 4.
- Inserted the now "erased" stock drives 2, 3, & 4 into the system.
- Started the system (Cold Boot)
- Confirmed everything was in working order and checked the Event Log.
- Created a new RAID 5 set and volume.
- Resync time: 2 hours!

- After resync, confirmed everything was in working order and checked the Event Log.
- Removed the volume and RAID set
- Reboot (Warm Boot)
- Confirmed services which could be disabled are and the RAID set was removed.
- Did a final check of the Event Log ... all seemed OK!
- Shutdown the system.
- Pulled and labeled stock drives 2, 3, & 4 and set them back on the shelf leaving stock drive 1 in bay 1 for Phase 3.
Phase 2 "Make it CLEAN!"
- Performed Quick Erase with WD Data Lifeguard Diagnostic 5.04f on new drives 1, 2, 3, & 4.
- Performing a Level 2 drive scan with SpinRite v6 on each drive (approx. 3 hours per drive). (CURRENT STEP)
Phase 3 "Build Upgraded System"
- TBD
After the SpinRite process is over I let you guys know how the next phase works out (If I come back into work over the weekend

). If not it will most likely be Monday. Have a good weekend and thanks for the help!