Are they don't look much different than the Focal 165 KRC speakers. I mounted mine on the outside of my pods using the factory mounting holes. I did have to use the J&M Corp mesh metal grills (which are the same as the HD grills btw), for clearance. I think you would be fine on clearance going this route.
What year bike did you put them in? I have heard the 17 up pods are different than the 14 thru 16 pods. Mine are black and the pods on my 15 where white.
I put them in my 2015 which has white pods as well. I also have a 2018 with black pods, but they are identical to the pods on my 2015. I installed Boom Audio II speakers in my 2018 and can confirm that aside from the color, the pods from 2014-2018 are in fact identical. Here are the grills that I used to ensure I had enough clearance. I ordered mine direct from J&M, but the eBay price is better.
https://www.ebay.com/p/J-M-HGRLBW14...9%26rvr_ts%3Df4a6a0981680ad4faad12ad7ffecd4e0