Does anyone have, in their vast expanse of documentation, dated factory assembly drawings or physical measurements
which might lead one to surmise '69 GTXs might have possibly had the quarter panel emblems in different locations based
on ....perhaps the plant, the build date, or some combination of the two?

Mine was a September 1968 build, and comparing measurements shown on FBBO and so forth, appears to have the emblems
installed in the typical 1968 location, which is noticeably closer to the character line than the generally accepted (raised) location most '69s appear to have.

I've replaced both quarter panels recently and planned to duplicate what the car originally had, but would like to collect whatever
info on the topic possible before punching the holes in the new metal.

Thanks