Which still needs a fair bit of work to make it usable with the M305. The selector cut-out will have to be filled or a dummy installed, and the spring guide pin cut out filled, the stock stiffened, the bedding done and probably the ferrule fixed too. The cheap G.I stock may be better than the Norc plastic stock, but its not a panacea. I'd shoot the OP's gun with a large selection of ammo to see how it performs, before making major alterations to the Norc plastic stock .
The selector cut out does not need to be filled or a dummy installed to make the rifle shoot accurately. The cut out is only a cosmetic concern.
The pin cut out is a simple insertion of a piece of popsicle stick.
The G.I. fiberglass stock does not need to be stiffened to outshoot the black plastic norstinko (although it does help if you are building a national match rifle).
A G.I. fiberglass stock does not need to be bedded to out shoot black plastic norstinko, an un damaged G.I has in spec bedding surfaces to achieve the required minimum 5 lbs. ferrule lip pressure.
An undamaged G.I. does not require a ferrule fix.
As for shooting the black norstinko - you will find that the binding of the ferrule plate which dissallows the barrel to go back into the same position after each shot will give a wandering zero and varying larger group size as the gun gets hotter. This is due to the barrel getting longer as it heats up, thus changing the tension between the plate and ferrule, and playing havoc with barrel harmonics.
The M-14 was mil-spec acceptable if it shot under about 5 inches at a hundred (wood stock).
The G.I fiberglass in a properly tuned barreled action will do under 2 inches consistantly.
A match tuned M-14 is capable of sub M.O.A.
These are my observations from building and shooting them since the 1960's.
But you don't have to take my word on it - Test for yourself - then make up your mind.