What kind of shape is it in? I think that year still had the bad valves in the cylinder head. They break and drop into the pistons. Whats wrong with the engine?
04 to mid 06 have sodium filled exhaust valves. Pull the valve cover and read the number stamped on the upper shaft. 72, replace them. 75 is good to go.
I will look at that tomorrow when I get there I'm I want to go start it up today and has the infamous click click click when you hit the start button so I'm going to try and replace the relay and go from there I bought it as the guy said that the motor blew up but I checked and seen no valve problems with the borescope and it doesn't look like the valves dropper I won't know Till I pull the head off to rebuild that motor