A US-based car conversion company has had limited success in turning a Holden Monaro into a Lamborghini Aventador in a Frankenstein-style project.

S and M Customs from Eagle, Idaho made a number of modifications of varying degrees of vulgarity to a Pontiac GTO – the left-hand drive version of the Australian-made Monaro sold to North America between 2004 and 2006 – to create the replica of the dramatically styled supercar.

While some punters may be fooled by a quick glance at the ‘Aventa-Commodore’, a mildly closer inspection confirms the replica is about at Italian as a McCain frozen pizza.

This lion in sheep’s clothing is unlikely to pull the wool over anyone’s eyes inside, however, with little more than a few Lamborghini badges pasted over the steering, trim and upholstery.

Special mention has to be made of the automatic scissor doors, which can be lowered (albeit jerkily) at the touch of a button but still need to be pushed shut like regular front-hinged doors.

Despite the V12 badges on the rear-mounted ‘engine’, the Aventador’s 515kW/690Nm 6.5-litre powerplant has been overlooked for the standard front-mounted 5.7-litre LS1 V8 which produces just shy of 300kW.

S and M Customs says the Monaro convert is reliable and ready to drive.

“No one would know it’s not the real Lambo,” the company says.

While it may not be everyone’s cup of tea, the Aventador replica is attracting plenty of interest on online auction site eBay.

With two days to go, 17 bids have been placed, with the latest standing at US$46,100 ($44,200).