The exhaust "system" I have in my car leaves something to be desired. The owner before had it as his and his sons project car. But they cut corners here and there. So my exhaust pipe from the engine all the way back to the muffler looks like some rusty old pipe they found laying around. In order to replace it I know I have to buy the exhaust pipe and muffler, but will I have to get new headers on top of that? And is it an easy days worth of work to fix? Lastly where would be the best place to purchace a quality exhaust system?