[s-cars] Door glass

[djdawson2 at aol.com]

Does anyone know if the door glass is compatible between all years of UrS4 and the C4 100's?  I'm trying to replce the glass on someone's car... they brought me a used item from a 100.  The plastic piece glued to the bottom of the glass for the regulator to attach to has a different hole location.  I can probably get around that.  However, it also appears that the window has a different contour to it... the curve from the top to bottm that appears convex from the inside.

Any input would be helpful, as I've found myself in yet another project that should have been simple... and is now a royal PITA.

Thanks,
Dave