Early a exahust suggestions?

Notching the crossmember is very easy to do,just take it off and bring to a welding shop or muffler shop.(if you don,t have a welder).I did my own..now where is that pic?
View attachment re and re of 66 Dart 005.jpg

I couldn,t find the pic of just the crossmember,sorry.Oh this is with SpitFire headers on a 360.