73 and up shock bumpers

73 is different than the 74 - 76. The latter have the shocks, so I can't comment on those. This is what's behind the 73 bumper:

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All you have to do is discard the reinforcing plate to free up some weight, then elongate the slots in the mounting brackets. I don't have a picture of of what they looked like after I opened them up but this is what I'm talking about.

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A milling machine does it quickly but if you don't have access to one there a probably ways to do it by hand. The elongated slots let the brackets and bumper sit further back, thereby closing up the gap between the bumper and fenders, and lets the bumper tuck under the grill.

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