Though it never had the side trim as long as I've owned it, and I have no intention of ever putting it back on,
the side emblems are mandatory. "You have to have these".

I measured and noted their location before cutting off the quarter panels, after doing some research I found my '69 emblems were in the same location as a '68,
I then found others built at the same plant that were the same/other plants had the emblem in a slightly different location. There doesn't seem to be a ton of interest in this, probably because historically the GTX has always been an underappreciated model, and that's ok. https://board.moparts.org/ubbthreads/ubbthreads.php/topics/3052718/1.html