1965 dart gt spring question

So that's where it sits completely unsprung. When I jack the rear end up and flatten the spring out completely I can get it to almost 90 degrees but not quite 90, the bottom of the shackle is angled forward. Should I make a spacer for the shackle mount? All I would need is maybe 3/4 of an inch or so.

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It looks to me like somebody has "fixed" that bracket. It appears to have an extra plate welded to the bottom and is the bracket itself welded to the mount area?