Anthony,
On the front drivers side of the engine about half way down, there should be a sticker. It list several things to include the HP rating. Not sure about the torque though (I dont think that info. is on there). It could be covered in oil, missing or all scratched up though. I have seen a couple trucks that had engines from other years.
Somewhere else on the site there is a breakdown chart for years and trucks listing hp and tq. for the respective years. Someone posted it some time ago but now I cant find it.
AJ