Got it on yesterday. WHAT A PAIN!. Gotta remove all kinds a crap!. Electric fan, PS Pump, belt, fuel rail and injectors, intake manifold, throttle body, bunch of wiring, O2 sensor.
Jeep definetly sounds different. Sounds a little deeper. Runs quieter cause there's no leaks now :p. Also, I noticed a power increase on the highway, i.e. passing and goin up long hills. I can hold my speed in 5th gear now. Definetly impressed with this thing!