Moonroof can it be replaced?

Does anoyone know if you can replace the stock
moonroof with a glass one?
Mines busted up, the rubber seal is coming off and
its getting rusted. It only tilts open and will not open up.

The infiniti dealership will fix it for big buck.
I was hoping theres an aftermarket glass one that
can be purchased and where can i purchase it?

I figure i can buy one and have a auto store put
it in for me.

if anyone has an info i would greatly appreciate it.
ty, Leo