Bill; Was at the dealer lot today and he has a pair of 7720's, one with 24.5 32 and other with 28l 26's. The 32" one was 3.5" higher than the 26 inch one. Tire brand was different, and maybe tread height would be a factor here. A bigger concern for you would be your final drives. They may look the same, but there are different gears inside a fd that goes on a 32 inch rim vs a 26 inch rim. Check with your dealer and you'll see there are 2 different part numbers for final drives for different size rims. A salvage yard is a great place to swap drives. Good luck Cliff