There is another free Kitbash Set for Download available.
Download here...
https://kitbash3d.com/products/mini-kit-neo-city
Kisbash Neo City.jpg
Mission to Minerva is also a former free download
Scroll down to the middle and then Click left hand side "Get your free Kit"
https://kitbash3d.com/pages/minerva
Kitbash 3D Mission to Minerva.jpg
Additional I found a very nice Kb9 Missile Pods kit here...
https://www.artstation.com/artwork/lLKWV
(Click on the right side the blue google drive download link)
STORMLORD