Installing a power steering gearbox on a 67

[67 chevy heaven]

I am trying to find someone to help me properly get clearance between my frame and new gear box.
I know I will have to trim the core support bracket which will be no problem but
To dimple the frame.... That's more than I am capable of doing.
I would rather not have to heat my frame and hammer out a spot.
Is there another way besides using washers/shims?
I live in SC
Any help will be greatly appreciated
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