New to the forum, great site.
I pulled a 66 Chevelle factory ac car out of the woods and am in the process of a full resto job. I am new to chevelles (alway was a camaro guy) and I have found that the car has two disimilar lower control arms.
Can some one tell me which is the correct arm for the car?

Passanger side has a 1.64" front bushing and 1.9" rear bushing, the sway bar end link hole has a raised cupped area

The drivers side has a 1.41" front bushing and 1.64" rear bushing, the sway bar end link hole is flat

They both fit but I would like two correct matching control arms.