Sometimes high performance headers aren't always that easy to seal. We at LRS have dealt with this many time and came up with this Extreme Exhaust Gasket kit for 1993-1995 Lightings running a 5.8L based motor.
These kits Include a set of our premium Copper header gaskets and a set of (16) locking header bolts. The Copper header gaskets are designed for high performance applications and the Header fasteners absolutely, positively will not back out. Using these locking fasteners Eliminates the need to monitor and tighten bolts regularly. They are made of Grade 8 aircraft quality bolts that are made right here in the U.S.A.!
This is by far the best experience I have ever had buying parts for my mustang. There is no other place for me, then LatemodelResto. I have bought multiple parts over multiple orders and have had nothing but a smile from ear to ear. Aaron Westerman was my contact person from LatemodelResto. I could not ask for a better customer service representative than him! He went above and beyond multiple times for me and made my experience with Latemodel the reason I keep coming back. LatemodelResto will continue being my #1 stop for my Mustang parts.