my 2.5 blew a head gasket on the way home tonite and was wondering how much work is involved in swaping a WRX motor into it. i looked around the forum and the only thing i found was swaping either the whole drivetrain or gutting the interior to get dashboards to fit. what is needed to swap just the motor? do i need to slice and dice the interior to get everything to work or can i just hook a 2.0t to the existing gauges and such?