Just dredging this one up again...
Been chewing over Ben's clearance question. The Argentinian head is narrower than the Aussie one, IIRC, at the port flanges. The manifold is wider, so the net result is about equal. So, Mr Mustangaroo, it may fit after all!
Any of you guys been out to check Leroy's crate of 221 toys?
Adam.