Had to replace my analog cluster, does anyone know how to reset the odometer to match the actual mileage of my car?

If you still have the old cluster, you can take the tumbler out of it and swap it out into the new cluster. I've done that before on a 73 Grand Prix and a 71 Firebird. Had no problem with either. Those are pretty much the same design as 1st and 2nd gen analog clusters.

You can change the wheels, but the white plastic lock will likely break when trying to remove it. They are very fragile. If you give that option a try, you'd be best off making a slotted 'comb' out of an old credit card to get under the lock to slide it off with even pressure across it's span. If that makes sense.....