I had to use a A body clutch rod from the Z bar to the fork on my old 1970 Cuda 4 speed car to get the pedal up high enough to clear the pressure plate fingers by 1/8 inch
I was drag racing that car with McLeod racing clutches in it, not a street disc, they wanted me to have .060+ clearance between the clutch disc and flywheel with the clutch pedal depress to shift the tranny so that what it took to get both the clearances on the flywheel and the .060 + throw out bearing to the pressure plate fingers clearances
Are you using a stock 1966 to 1969 Hemi 170 tooth flywheel and bell housing? If so you may have different problems than I had with the scatter sheild and smaller flywheels, I used the 170 tooth flywheel at first and then switch to the smaller diameter 143 and 130 tooth flywheels later