OK so i kinda looked into this for you and called a friend. For the hood and grille your looking around $700 if you do all the work yourself and dont get it painted. I called a friend of mine that works as a Chevy mechanic at a dealership about the airbags and he said they have to put them in to redo the computer and all. He said he could get them for me for $1500 for the steering wheel one and $1650 for the Dash one. This is him giving me his discount for work and not paying labor because he would do it. So your looking around $4500-$5000 to get it all fixed right saying your frane isnt bent and you have people do the work for you. If the frame is bent its gonna be about another $1000-$1500 if its not bad and can be straightend. So look at on the worst its gonna cost you $12,000 for a 2004 truck with 93,000 miles when a new one is only about $20,000 with almost 0 miles.