Did you check the specs on "with air conditioning" coils ? I once ran small block air coils (in a small block car without air) and they had a little higher static height.
Of course if the car has air then you're no further ahead.
Depends on what your looking for and how much you want to spend, but my neighbor had steel 1/2" spacers machined for his race car. This would probably be the cheaper way. As for being correct for your application I don't know.
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