Correct Colors for exhaust manifolds/smog tubes
 

Hey Camaro experts -

I'm restoring a 1968 base model Camaro 327/210 hp 3spd with an A.I.R. system. Need to know original factory stock correct colors and types of paint coatings for the exhaust manifolds (casting numbers 3892683 LH and 3872730 RH) and smog tubes. The engine had a build date the second week of May 1968. Many thanks in advance.

Manifolds are left in their natural finish with orange engine paint overspray all around.