Look at UB / speedway monoball bushings, anything else is overspending on the same thing.
The upper ears have the most deflection of any of the bushings, thats why I dont like poly as It just put the twist into the arm instead. None of it really matters if you just run a heim on the frame side
these?
46-1090 Metric trailing arm pivot kit
Fits 82-92 Camaro/Trans Am
78-83 Malibu
78-88 Monte Carlo
78-86 Cutlass, Gran Prix, El Camino $84.80