I planned this idea about 10 days ago, before I uploaded the C2A1 Leone tank. The SPG will have a 180 mm naval gun with an L/50 barrel length, and it's an open-topped vehicle using a modified C2A1 Leone chassis. And yes, because it's open-topped, I was forced to make the interior too! It actually has a lot of parts (751 PARTS), so it might be laggy on some mobile devices.

I'm gonna upload the SPG tomorrow (probably), so see you soon!