Hi Kevin,
I know that I have the FE pattern that I got from dialing in the locations on my mill with a DRO. I made a plate for some obscure ford engine (it was a 352 maybe?? sorry) I had to mount up back around 2007. I will PM you my email address and if you pester me I can come up with something in the next week or so.
As far as the SBC pattern, yes it is pretty easy to find in a manual called the POWER BOOK that GM used to print. I have seen scanned pages in many google searches so you may try that avenue. In fact yesterday in my Y block google search I came across the SBC ones somewhere....