What rearend do I have in my F150?

I have a 2000 Ford F-150 4X4 and the door axle code says H9 I believe its the 3.55 but is it the 9.75 or the 8.8 rear end the tags are all gone on it so I can't tell. It has 12 bolts on the rear cover as well any help would be grateful thanks. I'm attempting to replace my rear clutch disc pack as my truck grinds when I turn at low speeds, but it makes absolutely no noise when going straight down the road, if any one has had this problems please let me know what there fix or outcome was thanks.

Door tag gives an axle code