Very much a case of not rushing it as compromises sneak in then. Simple box plenum could be chucked together in a day but that will never be 'as good'.
Time here reaps rewards later and the decision was taken not to compromise.
Must admit my lifter fiasco didn't help things though as a 3 day job then took 5!
Oh and on a side point the Super Cup is back up and running on a standard inlet manifold ready for base lines to be taken. Drove it 80 miles today on its first run out on this engine. Very healthy oil pressure (way above book everywhere), stable temps and no leaks
Cheers
M