[Shotimes] Slightly OT-Wheel Bearings

[sho2go]

(For a Dodge Caravan)  rear drums, the OEM bearings are a little sorry looking
so I bought some new ones, which come with races.  The old races are pressed
in the drums; today is Sunday of course.  Will I need to have them pressed
out/in, or can I get a brass drift and punch the old ones out, freeze the new
ones, and slip them in?  I'm tempted to put the new bearings in the old races,
but I hate to do anything half-a**ed.  Anyone with any experience with this
type of bearing setup?
Mike