Hemi Swapping a perfectly good 70 Duster

Forgot to mention what I did there. The factory rods connect to a "mushroom" head type stud. They easily knocked out of the z-bar. I think they were just pressed in and not even welded. (aftermarket z-bar). The pedal was another story. If I remember correctly, I had to cut the head off and drill it out. This wasn't fun under the dash. I'd almost recommend taking it out of the car if you plan to do this. Grade 8 fasteners hold the heims to the pedal and z-bar.
That explains it very well.

I think this is an excellent mod as I have the same setup , centerforce, etc as you.

I will definitely be doing this in the future.

Thanks so much for the tech and advice,

Cheers!!