Saw this info in the for sale section. Are big block lower a-arms different from small block a-arms? I've read many posts here on TC and never saw this. Are the small block a-arms one oval one round bushing and big block two round bushings? Just curious and trying to educate myself. Thanks Pete

There's no difference Pete. They are the same. Only the front springs get changed because of weight. In the later years the lower rear bushing is usually oval. The why is an answer for discussion. I prefer to have both bushings the same because it's far easier to buy a kit.
I've never seen a car with mixed style bushings in it but guys here say they have.