Do you run headers ?

[PxTx]

I can relate to some of those feelings Bill. Funny how things were so cut-and-dry in a young mind.

I think an air pump into an exhaust manifold can be somewhat effective since those cast iron manifolds would act like an oven. With some additional oxygen form the smog pump, those unburnt HC's could be cleaned up. I think with headers there is a significant reduction in cleaning up the HC's because you loose the oven effect.