I think for a 7" rim, ideally you want a 4.25" backspace with disk brakes (which push out the wheel .25" compared to drums). The one you linked, shows 3.76", so I'm guessing your rubbing is on the outside of the tire? One good thing working on your side is the narrow tread. You didn't mention the sidewall ratio, but hopefully it's a 65 series (60 would look kind of funny as it'd be pretty short, and 70 would be way to tall for a Firebird front and could allow rubbing).
So what can we improve without changing the wheels...
I'm guessing to, you are running the stock geometry, in which case you don't have the ideal camber gain, so the tire isn't leaning in under bump. Also, are the static camber setting somewhere within stock specifications, or do you have a performance alignment?
First couple things you can try is sell the husband, and use the money to replace the upper and lower ball joints with taller ones. Here's an example of the upper ones for reference: https://www.rickscamaros.com/camaro...KQ8MEAQYAiABEgKoj_D_BwE&gclsrc=aw.ds This will allow the tire to turn inward under compression, which not only will reduce potential to rub, but improve handling immensely.
Third, you need to figure out how to get a front sway bar on there. Not only is that not safe for handling, but it's not helping control the tire movement.
If all this still doesn't solve it, then you need to replace the front wheels with something with more backspace. Unfortunately they don't sell that width with a deeper offset. And going wider still doesn't have the ideal offset, plus the 215 isn't recommended with anything wider than 7.5" rims. But usually you can get away with a 4.5" backspace on a 8" rim if you stay with 225/60.