normally i would walk away from it too my dad has been in the car business all of his life so i know a thing or 2 about what to look for all it did was suck in some water and hydrolocked not sure if this is true or not but a buddy of mine said that they are replacing a couple connecting rods,the push rods (push tubes),2 pistons and all of the bearings
nothin else in the truck got any damage