Heads come complete with Heavy Duty Valve Springs and Machined O-Ring for the person who wants to do the job one time and Do it Right. These heads allow the end user more choices as far as [tuning, upgraded injectors , and after market turbos ]. If your end game is more reliability or mind numbing horsepower these are the heads for you.
Heads come with a 1 year warranty from the date of purchase.
