Can you recognize which of these go to which side of the car? Either by looking at them or their stamp markings?

[This message has been edited by Wichita (edited 10-15-2024).]

I believe in the first photo, the top one is the driver side and the one below is the passenger side.

[This message has been edited by IMSA GT (edited 10-15-2024).]

The arms on my 87 GT were stamped L and R. Look for those markings as they show in your pictures. That tells the story of where they belong.

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" THE BLACK PARALYZER" -87GT 3800SC Series III engine, custom ZZP /Frozen Boost Intercooler setup, 3.4" Pulley, Northstar TB, LS1 MAF, 3" Spintech/Hedman Exhaust, P-log Manifold, Autolite 104's, MSD wires, Custom CAI, 4T65eHD w. custom axles, Champion Radiator, S10 Brake Booster, HP Tuners VCM Suite.
"THE COLUSSUS"
87GT - ALL OUT 3.4L Turbocharged engine, Garrett Hybrid Turbo, MSD ign., modified TH125H
" ON THE LOOSE WITHOUT THE JUICE "

[This message has been edited by Dennis LaGrua (edited 10-15-2024).]

I agree with both of the above.
I took pictures of my passenger control arms when I was working on the RF suspension several months ago. The passenger is the only side I took out, so I know that's what's in the pictures.
My RF upper control arm matches the bottom arm in your first photo.

This is a photo of the left front suspension of my Fiero:



There are two holes where the brake hose attaches to the control arm; by looking at the holes, I was able to work out which arm was which.