Need Help With Accessories

Need Help With Modifications

Hey all,

I recently purchased my 2008 GMC Sierra 1500 Extended Cab 4dr 2wd last week and I want to start making it my truck.

This is my first vehicle and I am going for the lifted/off road look and I honestly don't know what to look for.

So, I would appreciate ANY recommendations, feedback, tips, tricks, etc. Here's what I need help in:

Lift Kit/tires/etc.
-6" or 7.5" lift kit? (Brand? Special kits? Leveling Kits? Suspension? What is this is hear about Blocks in the Rear? Do I need Blocks?)
-What size tires for the above lift kit?

Headlights
I want HID's w/Angel Eyes ring and possibly blacked out but do I need an entire headlight kit? Or can I just get the bulbs? Recommendations for Headlights?

Tail lights
I want blacked out tail lights but not all the way blacked out. Holes for the lights and black around i guess?

Exhaust
FlowMaster or Mangaflow? I want Dual exhaust for sure. Any Recommendations?

Sound
I want some nice quality sound and not the "over the top trunk rattling bass." I find that annoying. I would like some bass but not too much. Any recommendations on what I would need exactly for this? Because I have absolutely no clue regarding sound lol.
-Amp?
-Subwoofer?
-Speakers?

Custom Air Intake
What does it do? And if it is suggested, any recommendations?

Performance chips
What do they do?

Well, that's about it! Thanks in advance guys and I'll post pics of my truck soon!