The bonanza of multimillion-dollar classic cars, caviar, and Gambler hats known as Monterey Car Week (a.k.a. Pebble Beach) is fast approaching, and with it comes a treasure trove of truly mind-boggling auction listings for us common folk to drool over. Last week we highlighted the 2006 Lamborghini Concept S, the only open-cockpit modern Lamborghini in existence, and today we bring news of an even angrier bull set to cross the block—this stunning 2000 Lamborghini Diablo GTR.

Company founder Ferruccio Lamborghini famously preferred luxurious grand tourers (once declaring the obscure Lamborghini Jamara his greatest creation) over the raw, street-legal race cars put out by domestic rival Ferrari. By the time he died in 1993, Lamborghini had yet to produce any factory racing specials, and it seems his passing opened the floodgates for some eager company engineers.

First came the 1996 Lamborghini Diablo SV-R, a tuned version of Diablo SV built specifically for the one-make Lamborghini Supertrophy racing series, a forerunner to today's Huracan-based Lamborghini Super Trofeo series. The 1999 launch of the stripped-down, illegal-in-the-U.S. Lamborghini Diablo GT gave the automaker an opportunity to create the sequel featured here, and boy did it deliver.