I have heard with a diaphragm type clutch its a bit more tricky to set the linkage adjustment. I imagine that has to do with the slop in the factory linkage.
The 'Slop" in the factory linkage matters not a whit, if all the parts are there and correctly installed.
Set the clutch departure properly on any street clutch, and you will not have problems. Some diaphragm clutches like to have less spring-assist on the pedal linkage.
I DRIVE my car. Sometimes 4 seasons. Linkage "slop" has never even entered my mind.I'd like to say that I wouldn't waste my time with heiming those parts, but that just sounds rude.......