dfletcher,
I would say that you could be 99.999% sure that the early and recent guns share the same stock dimensions. I would love to have a stainless and walnut model myself but don't knock the plastic until you try it. I have an all-weather 77/44 and even though I don't care for the looks , it is as close as you can get to indestructible. My heavier recoiling all-weathers have had the synthetic stocks changed but the 44 isn't bad in that department.
Chet,
Check out Mr. Quinn's new write up on the 77/44.
Jeff.