200 amp Powermaster alt , PN47764. 1998-up modular motor vehicles. Check http://www.powermastermotorsports.com to see if it fits your ride.! New condition, original paper and box, few months old. Works perfect, went to 16volt, dont need. $150.
Looked on the site, doesnt say if it goes up that far, you can contact them though and see what part number your truck requires. I had it on a 1999 F150 4.6. Looks new, but i converted to 16v and cant use anymore.
I had to go to the high output section, they have a contact e-mail and phone number, you can use those just to make sure. Hate to sell you an alt that wont fit!