Mods for 99 Trans AM

Whats up everyone,
I just got a 99 Trans AM. I am looking to put some mods on it. It currently has the Carbon Fiber Whisper Box Intake, with K&N filter, Borla exhaust, the strut bar across the engine compartmet, tranction bars, and 17" Konig alloys (11.5" of rubber on the road). I have a few ideas, I just wanna know who has done them, trouble they had, if any, and the performance increase.

First set of Mods:
BBK Throttle Body 80mm
BBK 1 inch Throttle Bbod Spacer
Mass Air Flow Body

Second Step:
Headers, but which ones?!:confused: The borla exhaust bolted straight up to the stock location, and I need to know which headers will go along with them, or if i need a new Y-Pipe. Help?

Third Step:
LS-6 Intake Manifold and Predator Module from Diablosport

I plan on doing all of this myself. Any hints, tips, and input appreciated. Thanks.

I just looked at some headers at ls1speed.com and the first pair of headers are by SLP and they have, compared to the other headers, a pretty crazy design. Why is that?

For headers, Best bang for buck....MAC midlength headers with the ORY, or Dynatech long-tube stepped headers with a custom Y PPC
THE BEST header for the LS1 cars is what has previously been known as the Groty or Grotyohann header http://www.provenperformanceconcepts.com/
Get some NGK spark plugs and Tayler Spiral Pro Wires. Do the throttle body bypass mod (free). My $.02
:)

When you do headers make sure you get a MAF translator.

Helps quite a bit.

i heard something about the MACs smoking tho, in another thread. what about Hookers? Good name brand and ive been lookin into them and havent read of any problems. how do they compare to MACs?

I have Hooker Long Tubes on my LT1.

Very high quality.

I had Mac shorties. Were so so.

What made you come to that conclusion that Hookers are better? HP? Ability to cool? I dunno much about headers, I know they get the exhuast out quicker and more efficiently. Help? Thanks