Also, the bases & pads are the same for all 68's. Don't limit yourself to just looking for SS parts. Likewise, in 68, a number of GM's came with the same parts, so if you're at a salvage yard, check out the Nova and Camaros as well (and who knows what else).
Not all Chevelle used the same armrests. Nova's and Camaro's did not have the long armrest bases and pads. The Concours Chevelle models did have the long ones. I have seen the long ones in 68 Impala's.
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