Kenneys a good guy to deal with , I bought a package D P F Del ete deal from him for my 08 6.4 , a Mini Maxx , AFE intake and a 4'' Flow Pro downpipe and a 5''exhaust system .The tip that was sent was for a 4'' and he overnighted the correct tip to me after a phone call . he had the best prices i could find at the time ,