Any 94 made from the early 50's on has enough holes to mount a receiver peep or a Weaver side mount without doing any more drilling. For some reason in the late 90's or so, Winchester quit drilling and tapping for receiver peep sights, but that doesnt affect you or your 70's gun.
I see no reason not to scope a 94 if you want the extra clarity. I disagree about it being wrong. It does have a few quirks, such as, the scope should be rotated 1/4 turn counterclockwise so the scope adjusting turret doesnt get in the way of the ejecting shell. You then need to keep in mind that the windage and elevation knobs are reversed. A little common sense when sighting in takes care of that issue. Yes, it is a little off center when side mounted, I can deal with that better than I can deal with a marlin. I simply like Winchesters far better than marlins (and yes, I've owned a bunch of both).
Most 94's are plenty accurate to use a scope, tho most people simply buy the cheapest ammo they can lay hands on and then say they arent accurate, but in thier bolt guns will try various loads, bullet weights, tinker with charges, etc,....There's also the issue of poor light, identifying horn count in some hunt areas, old eyesight. I see nothing wrong with a scope. Go for it.
! Please include a price on the scope mount if possible.