Savage mark 2 22LR scope base/rail

Per the thread linked below, EGW will make a custom base. Additional links to potential suppliers also in thread.



Might also reach out to DIP as they might make you one too. I only add them as I like the look of their stuff and use their 25moa rails. I have no idea if they offer custom products. Good luck.

 
You can additionally make your elevation with a set of rings that use various MOA adjusting inserts like the Burris' linked.
I'd be inclined to just add a pop can thickness shim to the rear of a 20-25 moa base and call it good for a Savage 22 but that's me. Unless you are stuck with the dovetail attachment method, in which case you'll have to spend the money for another solution.