Hmm, well, so far the [url=https://gundam.fandom.com/wiki/Amalthea-class]Amalthea-class[/url] looks like it has a good shape for a Wave Motion Gun barrel, just not sure how anyone feels about using a Zanscare Empire ship. The [url=https://gundam.fandom.com/wiki/Aoyagi-class]Aoyagi-class[/url] looks like a decent fit as well, if something from Gundam X is more to your liking. I'm not a huge fan of the Cosmic Era, but the [url=https://gundam.fandom.com/wiki/Nelson-class]Nelson-class[/url] could work as well, potentially.