C Catch Member Joined Aug 4, 2007 Dec 1, 2007 #1 are after market (like TA header) better then stock headers
N novaderrik Well-Known Member Joined May 12, 2004 Dec 1, 2007 #2 the stock headrs will suport as much airflow- and thus power- on a 4.1 as they will on a 3.8. and i believe there are some pretty damn fast (and thus powerful) cars runnug stock manifolds.
the stock headrs will suport as much airflow- and thus power- on a 4.1 as they will on a 3.8. and i believe there are some pretty damn fast (and thus powerful) cars runnug stock manifolds.
