yeah i've added the svt parts your talking about,minus the heads and cams..cams i do have just waiting to do something with them....anyways there isnt alot of power to be felt with the manifolds,tb,etc...until i did the custom chip..go through adc,it works nice,minus the premium gas at 2.35 a gallon

..i have the apex'i unit,just waiting for a nice day,and a dyno tune..