Look for rail and or 2 piece bases for savage long action with "flat back" you should be fine, they were all that way till not all that long ago.
http://www.opticsplanet.com/egw-sava...flat-back.html
Just to confirm, using a caliper, measure the distance, center to center, of the 2 middle screws. I am curious if they were any different than later models. If not, rails are easy to find, still being produced.
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