I think I'd replace them, but do it as a complete set. There are usually a few sets on Ebay that won't make you hock your firstborn kid to buy them. Lifters for a 216 or early 235 will also fit. How about the base of the lifters where they contact the cam lobe? If they're cupped to the point you can see daylight under a straight edge like the back of a hacksaw blade held across the bottom, you need to consider replacing the camshaft, also.
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!