Uhhh! shouldn't you do that in reverse, get the material then hack the window apart?? doh! lol. Make sure you totally wet out the silicone sealer abpout and inch wide of the window and don't, and I mean don't touch it for 2 days maybe more till the glue is set, or you will just rip it out with the stress that the hood places on the back window, I know I did it!!

good luck and lets know how you get on

O