Hi Everybody! I just received my leaf spring uprights. After looking at them and a manual from leaf spring cars, I have a few questions. In the picture of the upright, what are the 6 undrilled and untapped bosses for? After looking in a leaf spring manual, it appears the uprights are different or machined different than mine. Are the uprights machined different for splined drive hubs vs pin drived hubs? It appears to the same upright machined differently. On the front uprights, are they basically the same for a small block and 427 car? From what I can see they look the same except the leaf spring car has a clevice for the spring vs something for the ball joint on the 427 car. Am I on the right track? This is all new to me. Thanks Mark
