The best paint to use on the exhaust manifold would be stove paint,The stuff they use to paint wood burning stoves,It goes on nice and when you fire it up,it has a great look to it! Home Depot maybe or other big box stores. And it lasts for a long time and looks clean!

http://s1055.photobucket.com/user/baldybenny/library/

1936 1.5 wrecker,1937 gmc coe,1939 Chevrolet coe,1942 4x4 coe, 1942 coe,1946 dump,1947 2 ton dump,another 1947 2 ton dump,1950 coe,1967 c30,1937 cat 22,1936 Chevrolet 5 window foremans coupe, 1914 ford speedster.