Borg and Beck type clutch with hydraulic throwout bearing?

I guess I'm going to have to drag the parts out and start measuring to see where the difference is. I have a stock B&B clutch, flywheel, throwout bearing, fork, bell housing, as well as the Mcleod hydraulic kit, but don't have and was hoping to not have to mess with mechanical linkage from the clutch pedal back to the throwout. Truth be told I probably would need to upgrade the clutch to handle the rebuilt engine anyway but I was going to get it going with what I have.