Your 99E was made in very early 1970. Not all years have them, yours is likely right after they stopped.
Corelokts should work very well. Good luck, and welcome to the campfire!
“The Savage 99 Pocket Reference”. All models and variations of 1895’s, 1899’s and 99’s covered. Also dates, checkering, engraving.. Find at www.savagelevers.com
