Stealth heads are a great improvement over a stock head and very affordable. They can easilly be ported for more flow,

Just dont make the mistake i did of sending them to KG engines for their CNC porting , they came back butchered. [censored] porting,spring heights not properly done and worst of all they ruined the valve seats. Owner gave me every excuse in the book and never re imbursed a penny of the $1500.00 i paid .

Lesson learned, never deal with KG engines again and make sure no one else gets taken like me.