I own a Azure blue 03 mach 1.  I bought it with 0 miles on it in 03.  I was going to leave it stock, but after putting about 15,000 miles on it and seeing alot of other mustangs on the roads with upgrades I have decided to add some myself.  So far i have added chrome long tube BBK headers, BBk offroad X-pipe, and richmond 4:10 rear gears.  Very noticable difference in performance.  Was wondering what other bolt on or easy to install items i might be able to add.  Also, is there a website i can visit that might have information on the after market upgrades for the Mach 1.  Any ideas or information would be greatly appreciated, i am a novice, but looking to gain knowledge. 

                                  Thanks freek515

                                 Saginaw, Michigan

You can add some underdrive pullies, I think BBK might have some. You could also get an air intake that works with your shaker. If you can afford it I would say to go with a supercharger.  

yeah just what bullitt says.  i am actually thinking about getting the underdrive pulleys myself since they are about the cheapest up grade.  i have a BBK cold air intake but haven't seen one by that company for a mach 1 yet.  how about a chip? 

A Preditor should be better than a chip, how did you compesate for the gear change?  

steeda makes underdrive pulleys and a cold air intake for mach 1s  

C&L makes a cold air intake. $370 14-17 hp and 15-19 tq gains.  cnlperformance.com