Found the pic from eBay of early die-cast.
This one is about correct vintage of your car.
GTO DON / Ram4King - got it on ebay
He may still have it ?
I had a 6x2 (twelve pack) intake/carbs/linkage set-up for these early engines.
Six -3bolt base Stromberghs mounted on Logs.
Would like to seen it bolted down on this machine of yours !
Took forever to find a buyer for it.
Sold it for about $200 .... 15 years ago