Finally got the Cervinis exhaust off. The JBA LT headers and o/r H-pipe went on with the Flowmaster 40s out the back. This sounds way, way better.... in my opinion.
Roush Sport 2006 build:
Roush P-51 block, Roush TVS, GT500 fuel system, JBA LT headers, JBA o/r H-pipe, Flowmaster 40s, Roush Stage3 suspension, Roush wheel hop reduction kit, Roush 20" x 9.5" 5 spoke chrome rims, Roush 9 bar grille w/ emblem
Custom Tune: 522rwhp / 489rwtq
When I went from the Cervinis exhaust back to the Roush, I re-worked the entire exhaust. So, mine is set up for the 40s. I would call flowmaster and ask them.
RoushEx3 10 months ago