wheel cyl. fitting

not quite sure of your question with the description provided---- but if this is this the front brakes, you cannot get the brake hard line to match up to front brake wheel cylinder?
you had another post that stated you had a parts car with 10" front brakes-- did it not have all the parts needed?
your car should have a junction block with hard lines coming out somewhere on the driver's side.
then there should be another point that these hard lines stop-- a special rubber line is connected between the hard line & the wheel cylinder.

The 9" version will not work on the 10" version.

If all you need is the hard line--autozone has straight pieces-- bend it your self-- costs $5.00.

If you need the rubber pieces -- az used to carry those also, make sure you are not swapping 73- up parts on a 72 down car-- the set-up is slightly different.

Pictures would help, Lawrence