Quote Originally Posted by That Canadian Guy View Post
PERFORMANCE 12mm PLENUM/MANIFOLD SPACER! Holden V6 VS-VY - Mace Engineering Group

?
well aware of them, 24mm ones are available for both the lower and upper portion

i am most likely gog to be modifying the upper so those wot be useful anymore, and i wanted to wait for hood clearances and such before i got those