This is a rare Ferrari 512 BB "Koenig Special," a conversion that was carried out in the 1980s which included the full Koenig Specials widebody kit as
Ferrari Testarossa Koenig Competition: King of the neighbourhood
1978 Ferrari 512 BB 'Koenig Special' VIN: F102BB24043 - CLASSIC
1993 Ferrari 512 - 512 TR Spider
Rare Ferrari 512 BB Koenig Special Is an Eye-Pleasing Conversion
1979 Ferrari 512 BB Koenig Special for sale at Kissimmee 2016 as
1983 Koenig-Specials 512 BBi Turbo
Rare Ferrari 512 BB Koenig Special Is an Eye-Pleasing Conversion
1979 Ferrari 512 BB Koenig Special for sale at Kissimmee 2016 as
Ferrari 512 BB Koenig Special Sells For Half What A Stock Model
1981 Ferrari 512 BBI Koenig Specials For Sale
Ferrari 512 BB Koenig Special Sells For Half What A Stock Model