2 barrel with stock exhaust??

Rainy day, I own a '70 challenger with 225 Slant6 power. Back in the 90's I decided to install the Super Six 2bbl set up for a little more kick. Internally a stock configurated engine, except with the 280 CFM carb, Carter BBD. After that I added Hooker 3 into 1 headers w/ real 2 1/4" aluminized dual exhaust w/ "H" pipe to the back, and 2 glass pack mufflers. Mopar elect. Ign. with orange box w/ high output coil. Open element K&N 14x3 air cleaner and filter. I think it runs pretty good and sounds great at the back. Been running this setup for many years with , no problems. Thanks, Al