Given the poor quality of the hydraulic lifters available today, I can't think of a good reason to take a chance on running them. "New old stock" lifters from the late 1950's to mid 60's are a different matter, assuming you can find them.
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!