Can a 400BBM w/cheap aluminum heads compete/dominate against the street LS?

My take on it is........ don’t worry about what everyone else thinks.

Come up with a plan....... build it...... install it...... see how it all shakes out.

There will be some LS builds that are slower, some that are faster.
Just like everything thing else out there.

The only way to really learn how this stuff works is to actually build them.