ok guys/girls

Rather than buying a new/secondhand one, wen i remove my spoiler, i would like to know,
would it be possible to take the brake light out of my spoiler and put it in the rear window sucessfully?
as i will need to have a high mount brake light to be legal.

or would it be so much of a pain i may as well just buy one from a wreckers?

any input? cheers

not worried about saving money just dont see the point in buying one if i dont need to :P