Slant 6 Split exhaust
I also changed over to a Super Six set up with Carter BBD, several years ago on my Challenger with Slant6. While I was at it I added a Mopar elect. ign. With orange box and an Accel hi-output coil. Then put on a K&N 14”x3 open element air filter. My last add was Hooker 3 into 1 headers, real dual 2 1/4” aluminized exhaust all the way to rear through 2 glass pack mufflers and an H pipe between the two pipes. Stock internals on engine to a 904 Auto then to an 8 3/4” 742 drop out with a 3.23 gear set. It seems to run quite well.