1999 24 Hours of Daytona

It was the second and final year that the race was sanctioned by the SCCA before being taken over by Grand-Am.

20 Dyson Racing Riley & Scott Mk III driven by Butch Leitzinger, Andy Wallace, and Elliott Forbes-Robinson.

83 Roock Racing Porsche 911 GT2 driven by André Ahrlé, Raffaele Sangiuolo, David Warnock, and Hubert Haupt.

23 Team Seattle/Alex Job Racing Porsche 993 Carrera RSR driven by Kelly Collins, Cort Wagner, Anthony Lazzaro, and Darryl Havens.

19 SK Group Motorsports Ford Mustang Cobra driven by Kyle McIntyre, Gary Stewart, Andy Petery, Craig Carter, and Les Delano.