Using a digital caliper that is accurate I get 28.6 - 28.7 on average measuring in several places. Owned car since new, so I know the bar is original and hasn't even been repainted. It's a '91 2+2 NA
'91 NA 2+2 Aztec Red B&B Quad Oval JWT POP JWT ECU Eibach Sport Kit Tokico Illumina 5 way Rear TT sway bar, ES bushings Rear OEM TT wheels