Using in-wall speakers with my Polk RMDS1. Possible?

Ace100

I have had my Polk RMSD1 for years now and still love the sound of it. I've just moved into a new place and would like to install in-wall speakers for my L/R front and rear speakers in my family room but I'd like to keep using my RMDS1 system to drive them. Does Polk have a recommendation of which one of their in-wall speakers could possibly work well with my old system? Since there's no EQ, are the speaker output EQ curves too drastic to use with a non original speaker?

Thanks!