Ideal suit any turbocharged application

suits all HZ models

Pocket ported for increased flow

Heavy duty springs to control valve float in boosted applications

New quality head casting

New stellite valve set 

Permaseal vrs set and head bolts

Tappett adjustment and assembled ready to bolt up.

Note we will need youre old retainers -collets-buckets and cam etc to complete the new BOOST head email for details.