86' ESIR. Have a 3/4" (.750") Clutch slave cylinder. Did the 5/8" come on 87'-89's ? Mine is pitted and i can't find my small hone. Question is, should i get the 3/4" like the original, or should i upgrade to the bigger one ? will be putting on a Fadanza F/Wheel and upgraded clutch/press. plate down the road with the engine i'm building, Thanks, C300