I was just reading the NCRS guide on this. Like 6880/mike said the astroventillation was dropped at the end of '74 but some carried over to use up stock on early '75. side glass should be two place date coded and (IIRC) coded as M74 (coupe) or M75 ('vert). If you want I can verify the date and use codes tonight when i get home. The easiest way to tell orig glass is the smooth or wet look to the edges not rough or frosted.
steve
steve
