Before you cough up big cake for a custom exhaust, consider a MAC exhaust. The Muffeler is aluminuized steel and HTS coated, inlet and outlet pipes are fully welded on all ready to go. I was able to install it myself with only some wrenches and a Sawzall to cut the old tailpipes off. The system fits the balls and sounds real nice maybe too quiet, and only cost $265. MAC also sells really good headers and H pipes. Their version of a X pipe is the flow chamber which has an oversize X chamber.
According to MAC the 1 1/2" primary equal length is the best header for a otherwise stock motor, good low end etc but a pain for spark plug install, I like the 1 5/8" unequal length headers better. That is my 0.02
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Frank W 90 5.0 LX Notch MAC 2.5"cat bk FMS alu ds, MSD coil, MAC shifter 2.73 gears
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