What size front sway bar bushes 18.5 mm or 20mm

[mc625569]

Hello,

I have an 87 eta that shows a vin from 2/87.

When I look up front sway bar bushings on real oem and on pelican it shows 2 sizes , 20mm and 18.5mm.

How do I know which ones to use ?

P.O. was too lazy to change them and squirted all over them with what looks like polyurethane goop instead of replacing them. Laziness ftl...

[jeffnhiscars]

I'd be very surprised if it had the 20s. The old rubber MAY have the size stamped on the exposed end. Otherwise calipers will tell you the exact diameter of the bar