If Boyd's doesn't, try Richards Microfit Stocks at http://www.rifle-stocks.com/ They indicate, that for most of their stock styles, they will machine customer supplied blanks and inlet for about $95 plus shipping. And they will inlet for either the M77 or M77 MkII/Hawkeye.
Now you need to come up with a Pau Ferro stock blank (approximately 32 to 34" long, 6 1/2" deep at butt, 2 1/2" wide).
Ted