440 stealth heads.

I bought a couple of sets years ago and they checked out fine. Very early on the had an issue where some of them cracked but they addressed that issue and several guys received new heads in exchange. The sets I had on my flowbench maxed out around 267cfm which would take a lot of porting on a stock head. I ported the ones I had and they were easily flowing slightly over 300 cfm. Pretty hard to beat for the price.