I looked at some images I have of both setups. I'd say the lines look the same from the 67-68 4 piston to the 69-70 Single. They certainly cross the spindle upright at pretty much the same spot, and both appear to have that long hex section.

Rock Auto numbers also agree.

So, maybe as far as the flex lines go. No reason to believe the hard lines and take off points should be any different. 

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Here's a 67 4 piston setup from an Impala,

And a 69 single, pretty similar line and location.