I managed to get a copies of issues #69 and #70 of Combat Patrol which came with the sprues for a Goliath Rockgrinder. Good value at £19.98 compared to the list price for the Goliath Rockgrinder which is £42.50.
I decided I would build this as a Goliath Truck rather than the Rockgrinder.
Though a Genestealer Cults vehicle I am guessing that it can be used by the Imperial Guard or other forces, as it is for intents and purposes an Imperial mining vehicle which has been commandeered by the cultists.
There are two sprues for this model.
It certainly is an interesting kit to put together and there are quite a few parts.