Hi all. I am trying to attach this scope to this old Savage 110 from 1958. The rear part of the receiver has a flat top, the front is curved. Is there any rail on the market that has a flat/curved base? If not, should I buy 2 smaller ones? I'm on a tight budget but want to do something that will hold up to the abuse this 30-06 provides.

Thanks in advance. Photo link here:
https://flic.kr/p/q34Jz8