My bad on that "quick take" receiver sight misconstrue. Multitasking where I shouldn't have tried!
I'd counsel against the scope installation unless you're really set on it. I have several Stiths on my prewar Model 70 rifles in 30-06, 270 Win both from 1942 & a SG 70 .257 Roberts from '39. Wearing a Lyman Alaskan, a Weaver 440 & a Weaver, don't recall model; respectively. See SG pix. All came to me 'as nesting' on respective rifles. I wouldn't remove them as packages 'ostensibly' original but for the aft sights removal, necessitated by Stith mounting.
Notable, the fact that era scopes were delicate & host guns were most often "babied". Likely difficult to find a wear-matching scope & Stith mount belying subsequently 'tacked on'!
I'd just enjoy that honest principally prewar vintage setup you now have! If you want a scope friendly Model 70 go into about '48 year+ vintage when the Factory was offering D&T standard. Earlier D&T "non-collector bargains" will be custom drilled specs and who knows what likely obsolete mount such to fit! The Stith was a 'make do' adaptation. Great for collectors but also 'clunky are us' for contemporary users.
If you must have your Stith 'moment in the Sun', the Lyman Alaskan as recommended above at least presents a much more contemporary/classic image! Be sure to note the 7/8" tube diameter! Stiths were not "universal bases!
Again, just my own 'quick take'!
Good Luck & Best!
John