1971 Canadian Built 402 4 speed. GM of Canada notes that 66 in total with the M20 but does not indicate the engine size. If you remove the 42 small blocks with the M20, I would guess that the remaining 24 would have been with the 402 motor.
The 3 Canadian built Montes that I have posted all had painted tops, 2 with the D99 option and the other was a solid color without the trim.