SST Goliath/Chimera

It would way 100 tonnes and still have no armour protection

Ed Francis found it, guy who does Armoured Archives YT videos. A lot of people repost his work and fail to credit his archive digging.

There was also this wooden model made at the time in the 80s. Showcasing the proposed remote 50 cal mount on the left side of the hull, alongside the 50 on the roof.