Im wondering if there is some kind of marking on the head that tells u how many valves it has. I know the HF comes with 8 valves but im thinking when i bought the car it might have had the si head put on there.

Also if this is not true then i was wonder what u needed besides the head for a 8-16 valve head swap?

 

people say you need to swap a 16 valve block in to get the head to work right, but i dont think you need too, i think you could put the si head on, and i dont think the clearances will be that close. And who knows maybe the HF has 16 valve releifs? Some, people say do...