I am making the piping all from Aluminum.. while I already have most of the bends I need.. I am waiting on my couplers and the hump hose I ordered to arrive.. also got a nice 4 to 3 inch reducer for the throttle body.
One these are here I will make the pipes.. incidentally .. the truck is retaining the AC, cruise, etc.
I buy my bends from Burns Stainless... they are very nice people.
And you are right.. I should see almost no pressure drop .. I have a T66 and with the kind of power I will be making I should see little or no pressure drop.
Later