Depending on how much you want to spend, you're pretty much going to have to put a rail front end on the weapon.
Yes you will have some 'kentucky windage' and offset depending on how far you are shooting, but considering the work that was performed with the US Garand and an offset scope, it's just a matter of learning the offset.
The pricey version would include the
Ultimak multirail forend and some sort of red-dot sight such as the
1" Millett.
Using those in conjunction with an offset flashlight mount designed for the 1" tactical lights such as the
PAK mount and you'll get your left eye a heck of a lot closer than you'd normally be able.
You'll probably have to either lap the inside of the "rings" to get them to be truly tight and/or clean a little metal where the two halves meet to get 100% tightness but it does work.
I'd also probably change the easy-off screw on the mount out for a conventional allen head screw for security.
There are cheaper mounts available but the rigidity of them can be suspect.
If there's no other choices, a smith could fairly easily adapt and dovetail in a couple of offset sights