3 speed/4 speed clutch?

The victim is a 69 D100 with a 225 and a 3 speed. I am putting in a new motor and figured that i would replace the almost dead clutch at the same time. Eventually I will be putting in an aluminum OD 44 speed out of a later model truck or van but I don't want to have to replace the clutch again when I do that. Is there a difference between the older 3 speed clutch and the newer (80's) 4 speed clutch?

I haven't pulled the motor from the truck yet but I'm pretty sure it has an 11" clutch because there were no other options on the parts store website.