Hey,

I was looking at some used headers, came across a Holley 4-1 header. anyone heard anything about holley? Any suggestions? thanks

 

i had a cermic coated airmass (airmass = holley) 4-2-1 header and it did the trick.
It fit well and I can't really complain for the price.

I'm not sure how it compares performance wise, though. But compared to stock, the butt dyno tells me it did make a slight difference.