[Ironhorse]

I bead blasted my exhaust manifolds on my 71 4x4 during the restore. Bead blasted but did not smooth. Was several years ago, used POR 15 Exhaust Manifold Cast Paint. Has held up well over the years but it is not a daily driver. Think it would be fine but unsure about daily driver use. Maybe a ceramic coat like is used on today's aftermarket headers would be an option also.