There were in fact only four GTSR W1 Maloos ever made, yet I'm pretty sure the Senator Signature had about 200 made or something
https://www.9news.com.au/national/holden-hsv-gtsr-w1-maloo-on-track-to-be-most-expensive-aussie-made-road-car/3234f547-7fa1-4176-9db7-4cb0223a0320