I have a 95 Integra GSR

I want to put some 6.5" component speakers up front. I have alot of knowledge with installing speakers, decks, subs, amps and etc. In crutchfield it says that the polk momo components wont fit. Is this just because of the bolt pattern not exact. If so i can just drill the correct holes in the door. Or is it the depth. Or both. I was wondering before i buy the speakers and without having to trial and error some crap.

Thanks