@eric, I didn't consider buying the sticks individually. I was focused on buying them as a kit since general disclaimer over the years state that memory that come in kits usually come from the same factory. At least that what I was told so I've not bought memory in individual sticks for years. Also, you know what's funny, I never knew that there was an acronym for ECC UDIMMs. *facepalm* I've been doing my searches as "ECC Unbuffered DIMM".
Thanks Eric & TXAG26. Looks like buying the stick individually from Amazon or eBay is the way to go.