How much hp and torque did they make stock. There was a sticker on the back window that 525 footpounds but that doesn't sound right.

 

250/505 for the auto, and 275/520 for the stick. You can see the stock specs by scrolling all the way up to the top of this page. Look at the gray bar for "Arcticles/Specs", mouse over that, then click "Specifications", and find the truck you're interested in.

Here's a link to save you some time:
https://www.ford-trucks.com/specs/20...series_SD.html