Eric, I have a set from a 69 same as 68 but drivers side had a screw hole very bottom rear. Would like to sell as a set $50.00 shipped as long as it's in the lower 48 states. Let me know if interested. you really don't see the screw hole when installed and there is a very, very small dent.
Note there are two different lengths of rear quarter trim. Longer for use with skirts, shorter with wheel opening trim. Found out the hard way