Ferrari 308 GTB Group B rally car right here. Only four were ever made, and this is the first.
Completed in February 1983 for the Italian Pro Motor Sport team, it went on to win the Sicilian Rally Championship later that year, before adding the Spanish Rally Championship title and a third-place finish at the Targa Florio in 1984.
288 bhp two valve engine, a full fiberglass body, and a price tag so presumably massive you have to apply for it.
Nevermind. Here's the listing link anyway.