rear door speakers for a 900 - what fits?

Hey all,

I was thinking about adding some speakers in the rear doors of my 944T.
I tend to like and use Boston Acoutics (757, CX5, FX5, ...) or Polks (501, 502, 352, DX5,...).
Has anyone had used these brands in the rear doors, and if so, which model did they use?

Thanks in advance,

I just looked up what fits in the 940T. Polk GXR5A's fit.

I have a pair of Rockfords in there, sucks that u have to take out the back seats