yes the bulbs are the same. you should be able to pull one and get the number off of it. iirc they come out of the base. if not go to the junkyard and get another cluster.
yes they are all the same. I have probably a half dozen or more of the bases just sitting here, some with bulbs (no clue if the bulbs are still good though). they came from various pre98 and SVT gauge clusters.