If you bought it thinking it had 600hp than i think u must have gotten raped with the price as well, unless ur were trying to BS...
May i ask how much you paid for it??? cause i think there would be a big price difference in buying a 600 hp vehicle and a stock one...just my .02 cents
also, like someone mentioned it does not sound cammed it sounds stock to me..
Forgot to mention that the truck is nice regardless what engine or hp it has, imma keep checking in for updates