Plenum & Injector Housings
I reported them to my standards a real 36mm.
36mm gauge ball drops thru (primary)
On the Plenum the divider was removed from previous person who ported the plenum i port matched everything.
Put this set on your Z and gain 35-45 hp.
$1500 + 2 hours = 35-45hp
Can also port heads for a package deal.
Pete