Those should fit any Venge/Bring with the 420A, but no, ...they won't fit a V6.
Headers for the V6 have only ever been made by special contract thought group buys in the past. None where ever made for just anyone to buy. V6 6G72 Eclipse headers won't fit either, because they won't fit on the back side - front maybe

. You might alter them to fit, but don't blame me if you spend thousands of dollars trying to get working.
The guy with the downpipe & cats - Sroufe7
I thought about buyin a downpipe off him, and then finding someone else to make me the upper part to complete a full headers set.
BTW, don't we have enough headers threads yet? a few spaces down is another or ... a few.