timing the same for headers set up? lack power?

Nice. Big RED engine!

Jet up the carb. The headers are extracting or letting more of the spent air and fuel charge out. The result is more room to draw in fresh air and fuel. Your getting more air, not the fuel.

The exhaust pipe seems a bit big to me.

I don't know if the 1 bbl. is enuff. Did you do any other MODs?