Can you switch out drivers from another company???

I know this may sound odd but I'm curious to see if anyone has tried this. I currently have Paradigm studio 100 v2 speakers that I like a lot and plan to keep for a while. I went and auditioned some JM Lab speakers (Electra and Cobalt S) and enjoyed them very much. Comparing the Paradigms and JM Labs, I felt the JM Labs tioxoid tweeter sounded more open and crisp and the other drivers compared similarly. I was looking through Parts Express's catalog and saw that they sell the JM Labs tioxoid tweeter. So I was wondering if you can just switch out the tweeters or is there more involved, like making changes to the crossover or another part of the speaker? Like I said before, I like the Paradigms but If I can make a tweak and improve the overall sound, why not. Thanks for any response, Chris.