So for obvious reasons im not talking about a colorado here since in off topic but.... So I have to change out the injectors on my dad's truck, an 04 Silverado 3500 6.6L Duramax second gen...The truck has a total of about 503,000 miles on it now. 2 injectors are going bad, and causing it to fail smog, and EVERYone ive talked to from shop techs to my diesel instructor all say replace the 8. My questions for anyone who knows this, what brand of injectors does it use? I would think ACDelco, but i cant find them, or Bosch, or Delphi.. hell I can get Duralast injectors from work, but i dont really like the idea of using my store brand...... any Idea what brand I should go to or to stay away from?