I would caution against the exhaust uless you like a large increase in exhaust noise with negligible performance results. I installed the exhaust on mine and it does make the hummer sound like a hummer. However the highway drone, and the ability to actually hear how hard the engine struggles gives me some regret. I agree with Klaus. The only thing which will make the H2 a fast truck is the supercharger. I wish I had one. To give you some idea what you are up against, just picture a corvette pulling a four thousand pound trailer.
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2004 Lux with 6 inch Fabtech with tie rods, 38 inch MT's, 4:88 gears, and some minor engine tweaks.
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