So now the functional question is..
Does someone make a spacer plate? - a garage brew solution seems sketchy.
Otherwise I think just some fender washers on the bottom side of the strut tower, between it and the plate? At only 1/4”-3/8” maybe I could make something from aluminum plate? I would have to do it all by hand. I can’t seem to find anything online right off. But this is all new to me so I might not have the right terms or idea.
It would really just be a flat plate. You could take a strut mount and effectively trace it out onto a sheet of paper and then use that as a template to drill the holes and cut it out of 1/4in steel or aluminum.
Definitely don't want to just stick washers under there - That'll deform the strut towers almost for sure.
These 1in lift spacers could be machined down very easily.