That's interesting. Since those molding require alterations to the sheetmetal of the car (holes in doors & quarters), they should be on the fender tag. An SE car would have M31 on the tag, and a non-SE with that trim would have both A63 & M31 I think. I'd have to suspect they're not factory on your car, but since you've got them, might as well enjoy them. I know I would.

Does your car have the astrotone tailpanel molding (like the SE's) that also came with the A63 molding package? Does your car have rear seat ash trays?

Tav