3.23 or 2.94 gears for a 489 case 8 3/4

I'm looking for a set of used gears for a project I'm working on. The car has the 489 case 8 3/4 and the owner wants to take out the 3.55s and put in a more highway cruising gear ratio. A set of 3.23s or maybe 2.94s would give him what he wants. If anyone has a set they want to get rid of, please let me know. Any help would be appreciated.

Thanks.

Ken
Edison, NJ