No, they're 3 inch. I got the Flowtech ones that bolt to the header flange and modified the h-pipe to bolt to the cutouts. You would want the slip fit ones that match the diameter of your h-pipe. Stock is 2 1/4", most aftermarkets are 2 1/2". Keep in mind I have long tube headers with the traditional 3 bolt flange.

What do you mean by "send me a set"?

I really liked how my 40 series w/ Delta Flow sounded on my car with a 2.5" H-pipe.

I have spintechs now...They are loud *** hell when I get on it but thank god NO MORE DRONE!

Heres a short small vid of my car when I had the flows on it.
http://www.mustangworks.com/rides/vi...2721-slot6.mpg

88coupe, which Spintechs are you running? Pro Street's?

Never mind I just saw you have the Pro Street's. How do they sound? Do you have tail pipe or turn downs?

I run turn downs.
Click on this vid. if you want to hear my car w/ spintechs
http://members.cox.net/whiskeyriver/Turbocivstang.mpg