For those of us going down the higher end header route, we usually need to get some extra flanges to make our header/downpipe connect to the catback with the stock flange. It seems many of us have had problems finding these. I had the same problem last summer when I got my PLM H22 Header modified to an F22A flange. After a few weeks of searching the internet I finally found some. I've seen a few other members asking where to get flanges without somehow modifying an oem one. Below are some links on where to buy these flanges at.
2.25" Mild Steel
http://www.speedwaymotors.com/GM-53-...nch,47339.html
2.25" Stainless Steel
http://www.speedwaymotors.com/GM-53-...nch,47334.html
2.5" Mild Steel
http://www.speedwaymotors.com/GM-53-...nch,47340.html
2.5" Stainless Steel
http://www.speedwaymotors.com/GM-53-...nch,47340.html
This flange mated perfectly to my 2.25" Magnaflow catback. I used the 2.5" inch flange for a future upgrade to the catback system.
2.25" Mild Steel
http://www.speedwaymotors.com/GM-53-...nch,47339.html
2.25" Stainless Steel
http://www.speedwaymotors.com/GM-53-...nch,47334.html
2.5" Mild Steel
http://www.speedwaymotors.com/GM-53-...nch,47340.html
2.5" Stainless Steel
http://www.speedwaymotors.com/GM-53-...nch,47340.html
This flange mated perfectly to my 2.25" Magnaflow catback. I used the 2.5" inch flange for a future upgrade to the catback system.