i bought mine from hparts.com, but it was the type SH boot, which isnt the silver your looking for. it looks really clean, but if you want it to be silver, i have heard a couple of suggestions.
1) buy an SH shift boot, buy a silver boot from this one guy on ebay, take off original SH boot and put the new silver boot on the SH base.
2) buy a silver boot from this one guy on ebay (search "prelude shift boot") and staple gun it to the base under the middle section of the lude..under where the "P-R-N-D.." use to be(i dont know the correct term).
3) buy an SH boot, and spray paint it w/ silver vinyl paint
i dont know those are juss ideas