Best mods for starters 4:30's , aftermarket shifter, clutch quadrant and adjuster ,cold air ,off road x-pipe a tune and some drag radials.
These mods turn the Mach 1's into a screamer.
The ones with Stages are for older 221-351W, check out the years when you click a select a pump. This is what I have.
Ford Mustang 4.6 High Performance Water Pump, Mid 2001 - 2004: Stewart Components, Inc.
The exhaust is Kooks 1 5/8's LT's w/3" collector (JETHOT coated), Kooks 2.5" catted X, and 2.5" Flowmaster catback with original 40 mufflers.
Should feel like a new car!
nice mach, check out mach1registy.com for more info and such
How does the Stewart WP look? I bet a tune would make it feel even better.