What is the correct clutch / pressure plate for a 1960 C10 with a 235 and a 3 speed? I work a lot and sometimes have someone else work on my truck. I was having clutch issues and pulled it out only to discover what was in there isn't what i put in there 5 years ago. Originally it had a diaphragm pressure plate and now it has a coil spring pressure plate. It seems that the issue i was having was because the slave barely had enough travel to actuate the coil spring plate. The wrench that put it in even had to jerry rig an extension to the push rod just so it wouldn't fall out. Any guidance would be greatly appreciated.

Bob J