1 3/4" headers

What your suggesting is a total rework of the engine to suite a header? Not creating a header to suite the engine. Which would be easier to do but crazy for 99% of us in cost.

Ether way, the parts available to the end user are one thing. In general, most end users do not have or want to exercise the grey matter or spend the insane amount of money needed for such an adventure in the math skills, machinery, contacts, time, the will or the want to create an engine at this level.

It's actually ludicrous.

We presently, the majority of the forum, live and deal with the parts available to use from the aftermarket. We do what we can with what we have. Because that's all we have.

And yet, we still go fast.
(Or as fast as the wallet allows)