Adapting a /6 Z bar to a big block

Pretty sure the tube length is longer on a slant 6. Like maybe an 1" longer? Can't say for certain, don't remember where I heard that. Nor can I say that the arms are different.

I would say, bolt the bell and associated z-bar parts in, and then take some measurements. Cut it down, and then see how the arms work.

Best I've got right now.