Vinyl top ????

You areright Lm23, 67 is the only year for that type of window trim. i don't think you can install a vinyl top with that trim. I've never seen one. You can convert the trim over to 68-69 style then get hold of some around the bottom of the glass pieces, drill the holes and then there is a place to tuck the vinyl under, the same as the window trim.
Barracudadave67