Hello Wallly...I guess it,s a goo thing I snapped some pics of my Spitfire custom exhaust.LOL.You will see in the pics,how they added 2 1/2 inch pipe to the hedder down past the torsion bars then added the collectors.Now I,m not sure how tight the fit is with manual as mine was auto.Hope the pics give you an idea of the job done.:toothy10:Oh,these were also made so I could get the tranny out,just incase. View attachment re and re of 66 Dart 004.jpg