[quattroboy]

Thanks for the replies guys. I think that I will stick with the efi, but throw on a 'mock webber' stack manifold from verycoolparts.

Not sure if there is a power gain from this alone, but it may have to suffice initially. I suspect that I will be using the stock 5ltr engine and heads for a year or so after build. Perhaps drop in a fast road cam? Plus engine management upgrade?

Keep you posted.
Mark