hey guys i have 03 GT but i came across an 05 that had thumpr cams and damn that thing sound sick. the guy even said that he didnt lose that much mpg. how do the thumpr cams lope so hard with stock setups and no ptv issues? i read about them on the comp website but it was all technical and blah blah. i guess i need it in lame terms. does anyone have these on their 05+?