Mach 1 Club

Hey I am curious as to exactly what upgrades performance wise I should do
as far as handling and suspension and what not. What brands and parts work the best for the Mach 1? I would like to re do the front and rear suspension and everything that goes hand in hand with it so please let me know what has or has not worked for you. Thanks

My white 04 Mach 1 is all stock, but our Blue one has 4:10 gears and Bassani cat backs. These two mods make it a totally different ride than the stock one. We haven't done any suspension mods. Maybe someone else will chime in.

the gears sound like a definate but it has a borla catback with a H in it
was thinking of having the H taken out and a X put in cause H is a cheap version of the X from what i have heard. Or is true duals better?