Im getting ready to replace the shoes again on my truck. Looking on rock auto there are 3 different sizes of shoes for it. Its a 95 k2500 with a 8 lug semi-float 14 bolt. Does anyone know the size of the shoes on the 8 lug sf? The sizes they list are 11-5/32, 13 inch and 11.16x2.75. I think the 11 inch ones are the same size just different brands listing the size a different way and I think the 11 inch ones are for the 6 lug 3/4 tons. Am i correct that the 13 inch are for the 8 lug ff and sf?