Blasted the manifolds and painted them with POR-15 exhaust manifold paint. I used this on our automatic car but used the manifold gray color. It has held up very well so decided to use it again. Just this time in aluminum color. When I done her car I didn’t know they were supposed to be aluminum color. I prefer the cast color myself. I am not a fan of very many POR-15 products for a true restoration but they do have really good manifold paint.