53GMC, not sure if you found a filter yet but here are some WIX filter numbers with description and dimensions. First number is height, second is ID and third is OD in inches. CLM=Cartridge Lube Metal Canister:
51100 Cadillac (51-58), GM Cars/Trucks (50-62), Clark, Hercules, CLM 5.007 4.094 .553
51121 Buick (53-58), Cadillac (57-58), Chev.Trucks (56-59), CLM 6.339 3.778 1.095
51143 GM Family of Cars/Trucks (58-67) CLM 5.777 3.594 1.281
