Thanks for the warm welcome and advice, Thirdcoast. I really like you Tahoe, yours looks even more like a sleeper than mine does. It is funny you mention about unsuspecting Hemi's, as I just had an encounter with one. Was travelling up towards the Eisenhower Tunnel in the middle Lane just cruising and I happened to pass a new Hemi Ram that was in the left lane trapped behind slower cars. Well after I just went by him normally, it must have not sat well with him, so he got behind me, then into the right lane and I saw him quickly approaching. I let him get within 3 car lengths, then I put the hammer down. Now, we are over 10k feet above sea level, and I still managed to put at least 6 car between us. He didn't want to play anymore after a few mins. I let him pass me when we went down the mountain, and he kind of lingered around me, as if confused why a Tahoe kicked his ass so bad. I love that it's such a sleeper!!
So far all I have is the MIT intake. I am planning better to get better sway bars, better tires and wheels (something more stock), longtube headers, a tune, and because I'm VERY OCD, going to have my exhaust shop do another custom true dual system like they did for my 05 Tahoe. I know the factory system is awesome, and I'm not expecting any gains, but I love true duals and the sound, and equal steam coming out in the winter.
I still am in awe that I have one of 620 made, that completely blows my mind, thanks for sharing that.