TTi step vs. 340 manifolds

Sounds to me like I would ..

Cast exhaust manifolds, paint the intake manifold, stock type orange air cleaner and give up the HP and drive it more.
with 3:23 and assumed auto w/stock convertor that cam might be a little fat,

I do have the stock orange air cleaner. It's in pretty good shape with a hint of patina. I may restore it so it's perfect.

The original 340 and 4 speed are rebuilt.

This car has been intact its whole life and is very close to completion. Not a concourse restoration by any means but pretty a pretty darn good example of a factory restoration.