More info, and pics here, but the good stuff is as follows.
The Barra 240T is rumored to be able to do and easy 400hp by upping the boost from 6psi to 9psi.
I soooooooooooooooooooo want an XR8
Barra 182 - Twin Cam Dual VCT 4.0L IL 6 - 182kW / 380Nm (base engine!!)
Barra 220 - 3 valve per cylinder Dual VCT 5.4L V8 - 220kW / 470Nm (base V8)
Barra 240T - Twin Cam Dual VCT 4.0L IL 6 Turbo - 240kW / 450Nm
Boss 260 - 4 valve per cylinder 5.4L V8 - 260kW / 500Nm (available 2003)
The Barra 240T is rumored to be able to do and easy 400hp by upping the boost from 6psi to 9psi.
I soooooooooooooooooooo want an XR8