ecotec header install ???

Has anyone installed a pacesetter header on these cars and if so dos it bolt uo to the factory pipe or do i have to cut something??? is it easy? and do u use the factory bolts to put the header on???

it fits on the stock exhaust and its a bolt on job but i think you need to pull the engine out???? not really sure

my question is that they give u a piece of pipe with it i didnt no it that was a test pipe or if that needed to be fit or fab in the setup