Upgrading Audio Physic Tempo 2

Just got for my birthday a set of Scanspeak D2905/9500, which are used in the Audio Physic Caldera, and are apparently an upgrade for my Audio Physic Tempo 2's to the Special Edition.

Does anyone know whether I can just pop these tweeters in, or need to modify the filter as well?
 
Joachim, great to get a response from you!

I will contact AP to see if they have some more info on the filter modifications, except if you know a DIYer who may have these somewhere.

Anyway, thanks for your help, and of course for the fun I am having with the Tempo's.