This system from Summit is for headers and back.
1974 DODGE CHARGER Summit Racing® Header-Back Dual Exhaust Systems SUM-680140.
View attachment 345304
For the price,261.99 --worth getting and when at your exhaust specialist,he can cut the crossover and weld in front pipes to mate to the kit.
Did that to my 73 wagon.
Bonus is you can do headers if you want later down the road.
I had done this before and used the Summit kit on other Mopars. (68 Dart GT 'vert and 74 Challenger Ralleye 360)
Fits very well and the two piece tailpipes make adjustments a breeze.
TIP: snug all the pipes up and check for any rubbing or banging.
Once set,tack weld the pippes in place and air ratchet down the supplied clamps.
As I mentioned the 74 Charger and the 79 Cordoba are both B bodies and have the same 115" wheelbase and the kit will fit.
Hope this helps