He wasn't lying. The Abt VR6 plus compressor conversion did exist in 2002 and 2003 on the Leon Cupra 4 chassis, it made 275 proven bhp. There is at least one (black) down here.
It was not quite the best option, since it was heavy (1558 kg), burned tremendous amounts of fuel and it was just as nose-heavy as all VR6s. But it served brilliantly the few lucky guys to afford it.