Gday All i have just installed a AU XR6 motor into my XH and because the XH Ute had the lower manifold I wanna put the AU Inlet on and been told there is a difference in the wiring and would need an AutoElec to do that does anyone know wats involved in doing this Thanx Jon

The AU has a combined AIT and MAP sensor on the underside of the manifold, the plugs and outputs of the sensor may not be compatible with your current ECU. Also is the XH manifold a BBM? if so it might be best to retain that, if it is lower then it might be that way to clear the bonnet.
Cheers
TW.

Would be better to use an EF/EL manifold in that case as the sensors are the same as what you have.