Drivers header leak

I have cheapo unknown headers that came on my 360 when I bought the car, I went through 3 different "thin" exhaust gaskets in about 2 months and I was ready to give up until I used something like this (I don't remember the brand I used)
Remflex Inc. 6003 Remflex Exhaust Header Gasket Sets | Summit Racing

they are really thick and compress about 50% when tightened down. I havent had a leak since, I am super happy with the product