Has anyone modified their 2005+ stock H-Pipe to fit with Kooks LT's or any LT's for that matter?

 

I don't see why you wouldn't be able to use it. Just take it to a muffler shop and have them bend a pipe or 3 to make it work. Probably wouldn't cost that much either. Are you using the stock muffler setup as well?

 

If you look at the stock H pipe there are only 2 cats vs the older mustangs that had 4 cats and the S197 cats are before the bends in the h pipe so i do not see why a muffler shop can not just cut the cats out and flare the ends of the stock H for the header flanges.

 

Thanks Guys i'm trying to do everything I can to make the car run normal again.