where would that be located

 

on the front of the head (above the headers) it says PR3-2 and next to that is has a Hm....not sure if this helps or not.

well guys the head is a b16a, i did a little research and figured it out (google is a great invention) well anyways, im assuming thats what i would by my header for is the b16a..correct? let me know if not, thanks again.
B-rian

 

There is no stamp on the head. If he definetly changed the head then its going to be a b16 head........so buy a header for a 99 Civic Si and it will fit.

 

are you 100% sure. because there is most definetly a stamp (well not stamp but some letters) on the head. but it sounds logical so i'll go with it. thanks again

 

since we know you have a b18 block, any header designed for a b series will work, and you have an eg coupe. you can either get an integra header, a 99 civic si header, or even a dohc vtec del sol header.

 

Thank You

 

Slightly off topic but why are you buying headers if your going to boost anyway, seems like a waste of money.

 

If I do boost it wont be for another year...Kinda wanted to buy some other things right now. But who knows within another year I could have a different car

 

True true...

 

maybe he said the head is off a 99si kinda sounds like 95si
just my two cents