Which Clutch should i go with

3 finger = hard pedal.

Diaphram = easy pedal.

If you plan on driving it everyday or at least don't want to feel like you are doing a workout when driving, grab a CF. Of course going to a hyd clutch throws most of that out the window.

My Dart still has the overcenter spring on it.

One of my friends ran a CF dual friction in a tractor pulling 440 pickup. Looked as good after a year of that abuse as it did the day it got installed.