You'll want 2.25" for anything unsupercharged. The 2" would be perfect for the 2.5L NA, the 2.25" for 3L NA and SC'ed 2.5L. 2.5" would work for 3L SC'ed cars though.


http://www.bnmotorsports.com "And I will strike down upon thee with great vengeance and furious anger those who attempt to poison and destroy my CEG brothers. And you will know I am the Moderator when I lay my vengeance upon you."