I did a search first. What size, 9 or 10 and why the difference. Just thought some one might know so I can just go and get them.

 

i want to say the 9in came on the 7.5axle, and the 10 on the 8.8axle. I could be wrong. But a big guy like you, 4x4 and extended cap, should have the 10inch.

 

Just did my wheel Cylinders. I had a 10 inch on my 98 4.0 4x4 ext cab. I called Ford before I ordered the parts, and even they do not know. She said that they gave the option for both. Your best bet would be to go under there and measure it.

 

the 7.5 can have both, reg cabs get the 9 inch and ext cabs with a 7.5 get the 10 inch

if your an 8.8 ext cab 4x4 you def have a 10