I stopped by the hardware store after work and picked up what I needed to make my heavy duty replacement pushrod.
A few minutes on the lathe and I was able to turn down a 4.5" long 1/2-20 bolt into the new pushrod. I needed to reduce the diameter to approx .350" to replicate the dia of the 'ball' on the factory unit. I then stepped down the diameter behind the 'ball' area a little bit for the teeth in the little spring clip on the clutch master to hold the pushrod in place.
The new push-rod then was threaded into a new rod end to fit my modified pedal linkage with a nut to lock everything into length. This new unit is now adjustable which is a bonus for tuning the pedal position and where the clutch lets up.
For those trying to do this, just use a 3/8 rod end and pin on the pedal instead of the 1/2" units I used. I think it would fit a little better, and you wouldn't have to turn the bolt down as much.
If some of you with Getrag dodge trucks are having notchy shifting I would check out your clutch linkage. I think once the linkage gets worn or bent a little bit you don't get full disengagement of the clutch leading to notchy shifting. With this new pushrod installed my truck now shifts SO MUCH better!