Do you have a punch and a fairly large hammer? You pound them out from the backside, give it a hit then move 180 degrees and another hit until they are out.
Then to press the new ones in you use the old races between the hammer and new race to work them in. You work them all the way down and then use the punch again on the old race to knock it back out for good (naturally you have to use care not to damage the new races).
I wish you lived near me, we'd have this whole car done in no time. Surely someone on the forum lives close and would like to see this Dart on the road again?

Sheldon