I know its a long shot but I thought I would check locally before ordering them online.
Here's essentially what I'm looking for:
http://aa-ok.com/sling-swivel-w-screws- ... lings.html
http://aa-ok.com/buttplate-and-trapdoor ... style.html
The butt plate can be trap door or non trap door for all I care. It also can be ribbed or flat. I am just looking original pieces or at least exact copies of the originals because the buttstock is already drilled to accept the original plate. I got some new furniture for my 74 and I need these two pieces.