Well, I just took over payments on my father-in-laws 2500 hd due to his death. It is really an awsome truck but it looks a little dull. It serves it's purpose, a badarse work truck but I NEED an upgrade. It's in classic ('06 style) trim. I was thinking of a "new" Sierra style headlights or the Denali SUV style. Kinda new to the GMC world since I never thought I would get that truck so bare with me a little. will the front end and headlight brackets just bolt onto the classic style? How about the dash? I was planning on going to the dealer and getting some quotes on the dash firstbecause that's going to be really difficult with wiring and stuff involved. Hopefully, it's just plug and play but probably not. Anybody know anything about this?