I got a Forge World Ork Gunwagon many years ago, well in 2006.
A variant of a standard Battlewagon, a basic gunwagon consists of a powerful engine and a mounted Big Shoota on a chassis. A gunwagon only has a seat for the driver, but hand holds are provided to transport Orks over short distances. Much like other Ork vehicles, the gunwagon is a highly modifiable platform, and can be armed with a Zzap Gun, a Kannon, or a quad of Flak guns while still retaining its transport capabilities. In addition, the gunwagon can be up-armoured to protect the driver and gunner, and also mounts an extra Big Shoota.
This kit hasn’t been available from Forge World for some years now. There isn’t a like for like replacement either.
I have noticed that Forge World’s list of Ork kits has shrunk over the years. Their big Ork tanks are no longer available. Glad I got some when I did, though I should get to finish painting them.
My Gunwagon is armed with a Forge World Kannon. Though it is not fixed, so I can replace it with other heavy weapons.
Here is the Gunwagon next to a Looted Rhino for a size comparison.