Quote Originally Posted by DanGTP View Post
The outlet flange, where it bolts to the cat-back is 2.5". The down-pipe itself is, however, 3".
Thanks, makes perfect sense.

Quote Originally Posted by BillBoost37 View Post
Hi, Moved your post as it wouldn't get many visits on the end of a How to thread. Hope this helps you get a better response.
Thank you sir! I noticed it was gone right after I posted it, had no idea where it went. What confused me was someone had replied to the post. I wound up buying the speed daddy headers and spun Magnaflow high flow cat. Which now that I think of it, brings me to one other question I had...

The SD kit comes with 2 3" clamps and 2 2.25" clamps. From what I can tell the whole header kit is 3"(from what I guestimate), then it steps down to 2.25" at what looks looks to be where it would connect to a resonator, though I have to admit I haven't been under the car yet to really look.

So using this logic I assumed the 2 2.25" clamps would be for if you were going to install a 2.25" catalytic converter. I bought 4 3" slip-fit band clamps. Two fo rthe crossover, and two for the spun 3" Magnaflow high-flow catalytic converter.

Did I do it right?