you don't need test pipes or HFC with longtube headers because longtubes go from the engine to the midpipe of the exhaust. Longtubes basically are headers and testpipes together. So its either longtubes or shorty headers + HFC/TP. Not both.
Most people say for shorty headers you shouldn't get anything but Z1. For longtubes, besides PPE, Fast Intentions also make some. If you want a good header you probably will have to spend more than $700.
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