i had actually looked at those same headers just a couple days ago.

They raise a couple questions though. would i be better off sticking with the 2.5" true dual setup, or using the supplied y-pipe, and going back to a 3" SI/SO setup.
If i decide to stay with the true duals, does anyone know if you can find those for sale without the y-pipe?

FWIW, if i stay with the true duals, i was eventually wanting to get an x or h pipe in there and some better mufflers.