In that case, I'd just get the lifters reground- - - -several companies offer that service. I have my own jig for my lathe to put a 60" or 72" radius on the bottom of most stovebolt lifters instead of trying to locate scarce and/or expensive replacements.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!