Ive heard of the (2)piece rotors as opposed to the one piece. Does the pic here show one of each or is one just an aftermarket. Im restoring the car and wonder if I should sell and buy new rotors or turn the ones I have. If the one of the left is an original (if), does is have a litte more value to the original crowd? Just wondering.

One on the left is an original two piece, one on the right could be a replacement early rotor or you may have a late rotor & spindle... Does the two piece rotor fit on the other spindle? The new style rotor has larger bearing so if the spindle has been changed the two piece rotor won't fit....

Just a tid bit. There are very good repos of the 70-72 rotors out now. These are a one piece unit with all the improvements of the newer ones. Like reinforcements ect.They are made here in the US also, but are not cheap.