[popeyestruck]

I saw that in the manual and it confused me. Underneath the gasket photo it says 3000 4000 6000 and under the donut it says 5000. The gasket kit I bought for the truck came with a donut ,the exhaust came with a flat gasket. The manifold is set up for a donut. Edit I guess I could use the gasket and some permatex ultra high heat on both sides