72 idler arm bracket on a 65 frame???

[Alan's Classic]

I have a 65 c10 frame that I'm putting a 72 complete front suspension and power steering. The question is how to locate the 72 idler arm bracket on the 65. My thoughts are to make sure it is level with everything (gearbox)centered and make sure it is perpendicular to the frame.

Here is my 65 frame on top with the location of the old idler arm bracket location the best that I can tell (bolt marks). Why is the 72 frame location at a different angle? I have my ideas, but want to see what ya'll have to say. The 72 also has raised dimples. Do I need to space the bracket off of the 65 frame to duplicate the 72.



72 idler arm bracket



65 bracket with a spacer at the bottom mount hole.



Thanks for any help