Quite a bit! You will find that these pre 64 drilled receivers are a major factor to collectors as far as value is concerned.It will bring the value of a model 1894 rifle in 90% condition down from 375-550 dollar range to 175-250 dollar range.
No, it was not.
Have it drilled and tapped by a good gunsmith.
Yes
yes for a target scope .
Yes
if it did not come with the provision to mount a scope on it you can take it to a gunsmith and have it drilled and tapped for one.
Check the scope mount makers web sites or call Remington.
You will have to have a trained and competant gunsmith drill and tap your receiver for a set of rings and bases to mount a scope on your savage.
Yes
Yes
The receiver will need to be drilled and tapped for a mount. See a gunsmith.
Yes.Most marlin model 336 rifles have been drilled and tapped for a scope mount on top of the reciever.