I got Doug Thorley long tube headers/y pipe, dynatech 3" cat, to a Flowmaster ForceII catback all mandrel bent 3" pipe. The velocity of the exhaust is great, the low end is great and the top end is great and I lost nothing with the combo.
wow i didnt know anyone made long tube headers for the v10's.. all i could ever find were short tubes... got a link for that site man??