I believe I have two oil bath aircleaners, one is used Ford, the other is unused new, but believe it is after market, but from an early era, will get back to you about your 2-5/8" demention and value.
I checked my inventory, I have two. A used one, genuine Ford, however it is for the 21 stud earlier engines. The aftermarket one I have was manufactured by United Air Cleaners Services in Chicago. It is virtually new, having never been on a vehicle. It is in perfect condition including original decals. It is for the later 24 stud engines. Whoever you buy from be sure it is correct for your purpose. It measures 2-5/8 for your needs. Pictures on request. $100. plus shipping. Elmer Swift at 805-646-6440 or 805-458-0128.
Elmer,
Thanks for getting back with the information. I believe I'll have to pass on the air cleaners. I use my truck mainly as a daily driver. Though it is in very nice condition, it is not a trailer queen for Show competition. I just want a decent air cleaner to bring it in line with its' stock appearance.