True, depends on which data set your looking at. However, really not enough difference to warrant going that route.
Now if someone made a true mid-length header, (which would provide better ground clearance and still have most of the performance benefit of long tubes), that would be interesting.
Yeah, I would pay top dollar (like $2K) for a SS tri-y.
This guy builds Tri Y's for $550 plus $250 ceramic coat, contact him through his Fb message page