Big block Trouble in little China

If you have the ability to cut and weld I'd customize the z bar.

If you can get the z bar arms in line with the clutch pedal rod and clutch fork rod everything will work fine. These old mopars don't like misalignment in the clutch linkage at all. If you are fighting misalignment it is possible to replace the pivot pins in the clutch linkage with heim joints but that is a big job is the dash isn't apart.

As said if you have a 143 tooth flywheel you will be fabricating. 10.5 and you will probably still be fabricating lol.