Figured out what was going on… If anyone is having this problem, make sure you completely wipe the HDD and then also check for any GPT record hiding in there. I did a DOD wipe on this HDD, but apparently that was not good enough. You have to boot a utility CD (Gparted or Clonezilla) and get to a prompt. From the prompt, delete the GPT record and preserve MBR.
I ended up using “gdisk” through the Clonezilla live CD prompt.
gdisk
/dev/sda
x
z
-Thanks!
-Tate