[Gav]

Thanks Sambo,
They are EFI throttle bodies, they even have all the same plugs as the factory stuff (throttle position and idle air control) so the standard LS1 PCM will still be used.
The only down side is that Holley only makes the dual 4bbl manifold to suit the cathedral port heads at the minute. Hence why I have still got the LS1 heads on.
They will flow enough for now, and the low end torque should be killer!