Here are a trio of Imperial Guard Salamander from Simon’s collection.
The Salamander command vehicle is one of the many vehicles based on the flexible Chimera chassis. Armoured Company command sections are often equipped with the Salamander Command vehicle, allowing them and their Chimera borne infantry keep up during an assault and support the tanks.
These conversions were made, probably about ten years ago.
I am pretty sure that these are Griffon hulls, as for the gunners, well would you believe me if I said they were Ork Buggy Gunners?