They are developing a deck launcher for them as a Harpoon replacement and it looks like I found an answer to my question. They will be of comparable size and weight to the Mk 141.
navyrecognition.com/index.php/news/defence-news/2016/march-2016-navy-naval-forces-defense-industry-technology-maritime-security-global-news/3761-exclusive-first-image-of-the-lockheed-martin-lrasm-top-side-launcher.html
I know they frown on low post count link posting, but hopefully I can get a pass on this one. Lurking for six years should count for something.
Edit: Looks like the LRASM is about 500# heavier per round than Harpoon per spec sheet.