Reputable Spacers?

So I got an absolute steal of a deal on some rims off a 94 Mustang. The lug pattern and hub bore are a perfect match, but the offset is just wrong enough to make it where I would be scraping my calipers if I was to drive on them. To combat this, I need to find a decent set of 1" spacers that won't make my car wobble at higher speeds.

Yes, I am aware that spacers aren't the best for any vehicle but from what I can find online an inch won't cause any sort of true issues provided I get the correct bore size.

Any and all recommendations for 1 inch spacers would be greatly appreciated as I hate the teardrop rims for the 98-02 MGM like I have now.

TL:DR I need good quality 1" spacers for my Grand Marquis.