Yes, those stocks are all made by Boyd's.
Mark II BV = Mark II Boyd's Varmint.
Wow that looks beautiful
The BV is Savage's code. Look at all of their models
B= laminate stock
V=heavy barrel
F=plastic stock
SS=stainless steel (self explanatory)
T=thumbhole stock
G=birch wood (or whatever) stock
L=left hand.
Not my gun, but I did pick up one of these stocks off the EE.
Looking for a stainless .17 barrelled action for it.