I have a 69 mustang project car. I dropped a 351 w with afr heads in it. I tried 3 different sets of headers, 2 wouldn't fit at all, the 3rd(hedman) was close enough that some heating and banging got it to clear the frame. But no way the z bar was going in. I bought wilwood hydraulic clutch kit. Welded up a bracket installed it bled it and it's not disengaging. It seems to go about an inch but not enough that I can turn the driveshaft. I tried moving the fork with a crowbar, I never realized...

Hydraulic clutch problems