Replacing a lazy lifter

Yeah they pump up plenty fast enough w/o soaking of any kind. Like, 3 seconds.

I DO NOT think it's a good idea to try to swap the guts from your SUMMIT part lifter into the housing for an old MOPAR lifter! Anybody else see potential problems with that?

I don't care how faithfully they follow OEM spec, mixing brands is trial and error.
You might need an Xray machine to see the differences but they are there.