I measured the rear sway bar in my 97 Camaro yesterday and it seems to be a 19 mm sway bar (closer to 20).

Anyway, none of the rear sway bar bushing I was able to find in Rockauto mention a 19 mm sway bar.

Moog K6686 are specified 23 mm at moog´s site
The AC Delco ones are for .94 , .91 or .84 sway bar diameter. They all seem too big.

I dont want to use poly due to the squealing
Any ideas?

 

The poly bushings work great on sway bars, increasing the roll resistance provided by the bar slightly.

energysuspension.com | Sway Bar Bushings

 

Thanks fred I will give them a shot.