Rear window replacement- 2017 Silverado

Factory ordering a new HD2500. Unless I order the "convenience plus" package (~ $1K option), I can't get a sliding rear window. Anyone know of a place to get a rear slider that can be swapped for the solid rear window? Preferably, with the defroster conductors embedded in the glass?

Try to keep the original glass if you wind up doing the swap. It is worth something in the replacement market and a future buyer of your truck might want the original glass. Otherwise, the convenience package might not be that bad of an idea.