Does the new rear window get inserted from the outside of the door or the inside?
Also, which end ges in first the right side(tappered end) or the square side?

You have to disassemble the rear window track and slide the glass straight down. Then reassemble with the glass in.

Thanks So Much!! I waqs getting ready to force it.
But after taking the scissor mechanism out... it fit right down... THANKS kitch428...

Dear Kitch428,
I tried to rate your answer but when I clicked the Rate this Answer tab... It took me to page that said the following... This post has not received any reputation. You currently have 1 reputation point(s)... I will try again later... But to anyone wondering the info provided by kitch428 was spot on... he's an expert and we are lucky to have him... I have checked a lot of his other efforts in helping others and he is in a class all by himself... David Salas.
This post has not received any reputation. You currently have 1 reputation point(s).

Glad to see things went well. Thanks for the try on rating my answer.
Maybe the mods can see this and do something about that. Happens to me ALL the time.