With the HDT modifications to the Monza coupe which included the 180 kilowatts Group III 5.0 litre V8 engine (which was in fact lighter than the 3.0 litre 6 cyl Opel engine it replaced as well as being set back closer to the firewall for better weight distribution), a 5-speed manual Borg Warner TG5 transmission and Corvette styled front disc brakes (later adopted to the Holden VL Commodore turbo and V8 models), the sale price of the car was projected to be approximately $45,000. [