will an aem cams do wonders for a 98 gs automatic?

i just had my timing belt replaced while it was in the shop, i had them install the AFX Under Drive Pulley. i also replaced my drop in K&N with an AEM short stack.. it got louder.. think i do feel it more powerful (or maybe the sound makes me think it is )

since mine is an automatic.. i did notice that if i put it on drive and let go of the brake.. the car "cruises" a lot faster than it used to.

i am looking to work on headers next. or maybe suspension...i work in bel air .from the valley, there are lots of winding roads on the way to work. should i get rear bars first or front lower?

'98 GS Automatic
AEM Short Stack
Bored throttle body
Bored Intake
GS-T Exhaust
NGK Plugs and Wires
AFX underdrive pulley

'98 GS AT.Magenta Gray Pearl.Accel Spark Plug Wires.NGK Plugs.AEM Short Stack.GS-T Exhaust.AFX Underdrive pulley.RRE Front Lower Bar.Tenzo Rear Upper Bar.Tenzo Rear Lower Bar.Tenzo Front Upper Bar.Energy Suspension Bushings.Energy Suspension Motor Mounts.