What engine was in this Nova?

[YENKO DEUCE REGISTRY]

The extra bracket will be on the driver's side, not the passenger side, just like the Camaro's. I never looked at the driver's side of this car, It's the 4th car up in a 5 car wall surrounding this junkyard - and it was hard enough to climb up to the 4th car, I had to swing out over this 'cliff' of a Buick Lesabre. I nearly had a heart attack when I got up there - FG, 731 interior, 06A, had seen the single fuel line & rear sway bar stuff from the ground, so this thing had Deuce all over it. Then I saw the BB heater box and core support, figured I might as well make the climb worth something! Came back later for the F41 brackets, they are probably useless too, but.... it was fun. I took the trim tag off of it because of date irregularity, but then dropped it over the other side of the wall while climbing down - oh well