The general consensus is that that body colored stick on was the factory applied molding and the screw on channel with inserts was dealer applied. I know that sounds counterintuitive, but everyone seems to be on board with that fact. There are several threads on this forum that discuss this issue.
I would rather not have the molding, but if I must I prefer the color keyed stick on with the correct bullet ends.
Somewhere I found a link that contained the lengths and location dimensions for each piece as done by the factory, but I cant relocate that link and I didn't bookmark it. If anyone has an original paint car with the stick on moldings I would really appreciate pictures showing the end cuts and a sketch with dimensions and locations. This may be in the assembly manual, but I don't have one for a 78 Fbody yet.
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