Exhaust exit location
My favorite is over the axle and out just past the bumper. The one year only exhaust for the 67 GTX is what I used as a model for my 68 w/440. 2" TTI's with the 3" TTI H pipe kit/mufflers and Accurate's 67 GTX tips.
The model:
On my clone-vertible:
TTI 3" square tip Dodge tip and Accurate 3" 67 GTX tip