Brand ? Other then the egr what doesn't fit I've installed a few pairs of bbk long tubes for fox's on a sn95 cars a few times with no problems. Would I do it to my own car? No..
If they fit no problem why wouldn't you install them on your own car? The ones I tried were BBK. I experienced steering shaft and clutch fork cover clearance issues as well as the header coming down in the wrong place under the car and hanging too low. I didn't even try the pass side.