the problem is that most shops have no idea how to weld it up. I have gone though 3 different exhaust shops with 2 different headers (because 1 got messed up in a large way). Even had one go as far as putting a right angle tube steel in welded that, cut off the flair and nut on the EGR tube and said some "high temp" silicon would work to "bridge the gap".... that fell apart before I got home.
That is why I did a mock up, found a fitting, cut the hole my self, welded it in and then cleaned up internal to the runner on my own. I did need to bend the EGR tube slightly, but their is still plenty of airflow through the tube.
I also plan on tapping my self and making my own EGR Cap that goes on the header bung. so I can get rid of the EGR system but be able to install it when I need it.;-)
2001 ZX3 2.0L Zetec-
Hatch Nation #42
Going through Rebuild See "The TICK Build Thread" for details (http://www.focusfanatics.com/forum/showthread.php?t=289168&referrerid=62897)