The Roush subframe connectors are not full length.
Here is a thread showing the Spintech stepped full length subframe connectors on my Roush
(also, in the pics, you will see the Roush subframes tied into the spintechs)
I had the tips cut off the side exhaust on my old car and then just dented the pipe where it cross the subframe so that it would clear and welded them back on.