Here is the list of modifications I have done so far:
Corvette Servo on the 700R4 (Thanks Joey!) - Incredible difference in the sheer power of shifting over what I used to have. For 16 bucks, this is something every F-body owner should do.
Edelbrock Strut Tower Brace/14X3 K&N Air Element with a non-drop base:
Stage 1 ECM from Brian at TBIChips.com. REMOVED 10/05
A note about this chip. I added it because I wanted to see what kind of change I could get with a different PROM. Given a pretty close to stock configuration on my car, the stage 1 chip Brian offers claimed to enhance the fuel curve (as well as remove the speed limiter) on the OEM chip. I would say that claim holds true and I recommend this chip for someone in a similar situation and who owns a TRUCK. For modified engines, get into burning your own. I'll enter this arena with my trusty laptop soon. (2/3/06 - I removed the TBIchips ECM a long time ago. See Page 5 for details)
Flowmaster 80 on the stock 2.5" pipe (I need to to change to 3" soon).

CLICK ME TO LISTEN IT!
TDS Wonderbar - Lon Salgren over in Hacienda Hieghts, CA offers a great web site for hard to find third gen parts. Check out "Top Down Solutions". My wonderbar was a MUST HAVE addition. The one he has to offer is top knotch.
Billet Aluminum Gauge Bezels: Look up a user on TGO called "powermite" and check his car out (that lives in the UK). He did this awesome gauge bezels and a guy named Brad Noon copied them and made a run that sold out fast. I got a set of polished ones:
Table of Contents
Page 1 Introduction
Page 2 Vacaville All Pontiac Show
Page 3 Winter in the Bay Area
Page 4 Modifications
Page 5 Changes up to February 2006
Page 6 Changes up to July 2006
Page 7 Changes up to May 2007