First things first:
Make sure you're putting your thread in the right forum, technical questions (anything asking about what's wrong with your car, what will fit, what will work, what won't work) goes in the 2.3L TECH section. Non-technical stuff goes into the 2.3 TALK section.
Next:
It's a general question that gets asked at least monthly, and sometimes much more often than that. "How do I get more performance out of my 2.3L in my Mustang?"
We had quite a few threads (a few dozen in all) in this forum on the subject, so I rounded them ALL up and merged them here:
http://www.allfordmustangs.com/forum...ad.php?t=68574
All future 2.3 Naturally-Aspirated General Performance Questions should be posted in that thread, this should give all of us a one-stop source for information. Specific questions, such as "Which header works/fits best?" Should still be in separate threads. As should turbocharged and vehicle-specific related technical questions.
Also, before posting a question here in the 2.3 Tech forum, try using the search feature, the 2.3 has been discussed in great detail in this forum since 2002, we've covered everything from nitrous oxide, to turbos, supercharging, what parts will and won't fit, carburetors, EFI, points, Duraspark, EEC-IV, DIS, and exhaust several times. The answers are probably here, and if not? Ask away, we'll work together to get it figured out!
Also, if you're looking for 2.3 Performance Parts we have a long-standing thread on that HERE:
http://www.allfordmustangs.com/forum...rts-sites.html
For those wanting to turbo their naturally-aspirated 2.3:
http://www.allfordmustangs.com/forum...aspirated.html
Also, if your 2.3L Mustang is a Mustang II and your post doesn't relate to the engine; post it in the Mustang II forums.