ENGINE MODS

[MY PRIZE]

Iv'e reading this column for a few weeks now and have gained a lot of info from most of the postings.
Being a new user let me tell you a little about mustang before I ask questions. I recently purchased (July) a 2000 S-281 Saleen N/A. The car runs great for what it is (advertised at 285 hp at 14.1 1/4 mile).
I just got done installing a mac prochamber which seems to help on the top end.
The car goes in for a rear gear change next week 4.10 vise the current 3.27 (this should made a big difference in performance).
Not sure about the speedo fix yet.
My question is has anyone installed headers on thier 2k 4.6 if so what kind did you buy and how difficult is the install.
Next, would a 73.66 MM TB have any significant effect on the cars performance?
Finally, has anyone seem carbon fiber headlight covers for the 2000 model, I saw these on a 97 cobra and they were aewsome....
Thanks guys in advance I look forward to future discussions.......

regards, 00-525