I own an armful of M77 MKII's.
I tried a Boyd's stock but as a matter of taste did not like it.
A friend who was a gunsmith had a stock duplicating carving machine so he roughed out a thumbhole stock using a Remington 700 SA pattern minus any internal inletting but with a recoil pad.
After a week of careful work my rifle was inletted and another week was spent in final finishing. I was real pleased. I then used the first stock as a pattern for the second stock and cut down a week of inletting work to about 5 hours.
Inletting the MKII bottom metal is a real chore. Getting a good adjustment and alignment for the floor plate and trigger guard takes some time.
Never ordered one, but there is an outfit in California, Richard's Microfit Stocks, that has a list of closeouts that can apparently be shipped without waiting. Some of their stock designs look OK.