I've got questions about contact information to the owner, so I called him. He was more than willing to talk about his Goose, but "is not an internet guy".
He can be contacted by email: post at betovent.no
From our short conversation: Bought the car from Mr. Sbarro, a well known car designer and personal friend of Mr. DeTomaso. Car was yellow when bought, but was orange under that. Present colour is from a Lambo. Present owner made new hubs to convert to 5-lug. Rims are Halibran copies, made by Image in England. 18x13" rear with 345/30 Pilots. 18x9" front, didn't remember tire size. We didn't talk about engine, but if I don't remember wrong he has 351C with IR injection.
This Goose is a beautiful piece of work indeed.