Appears to be either a '66 or '67 Buick Wildcat.
I had a '65 Oldsmobile Dynamic 88. Similar size car. Mine was 18 ft. long!
I hot rodded it, and it was more fun than a barrel of monkeys!
Good guess sir. It's a 1968 Buick Wildcat 2 door hardtop, 500hp, 430 big block with electronic fuel injection. There's lot of things done on the car - disc break conversation, modern 3 speed tranny with overdrive,, electronic trunk release - before, they've been all vacuum - plenty of engine mods - headers, hardened valves, exhaust - wheel stabilizers, self-locking rear-end and a lot more. It's a full size buick b-body car..so it's massive. 67&68 were basically the same cars, just different front grill, rear lights and dash.