I don't know if the aftermarket upper strut mounts are legal in stock or super stock as I'm just a bracket racer. I have had your exact problem and bought a nice set on ebay that work with factory struts and aftermarket replacements. They are all steel and can accept a coilover also. They have 2 sets of adjustments and give you more caster.
https://hotpart.com/product/camarofi...ucts-made-usa/
These are what I have.