Pos	Class	Date	Race	Entrant / Team	Chassis	Championship
12	GTP	1985-03-23	1985 IMSA Sebring 12 Hours	Preston Henn Racing S	Porsche 935 L	IMSA
DNF	GTP	1984-11-25	1984 IMSA Daytona Finale 3 Hours	Preston Henn Racing	Porsche 935	IMSA
DNF	GTP	1984-06-16	LII Grand Prix des 24 heures du Mans	Preston Henn Racing S	Porsche 962	World Sportscar
6	GTP	1984-03-24	1984 IMSA Sebring 12 Hours	Fitzpatrick Racing S	Porsche 935K4	IMSA
DNF	Gr.C	1983-10-02	II Fuji 1000 kms	Alpha Racing Team S	Porsche 956	World Sportscar
DNF	Gr.C	1983-09-18	III Brands Hatch 1000 kms	Preston Henn Racing S	Porsche 956	European Sportscar
DNF	GTP	1983-08-21	1983 IMSA Road America 500 Miles	Preston Henn Racing S	Porsche 935 L	IMSA
10	Gr.C	1983-06-18	LI Grand Prix des 24 heures du Mans	Preston Henn Racing S	Porsche 956	World Sportscar
DNF	Gr.C	1983-05-08	I Silverstone 1000 kms	Henns T-Bird Swap Shop S	Porsche 956	World Sportscar
7	GTP	1983-04-24	1983 IMSA Riverside 6 Hours	Preston Henn Racing S	Porsche 935 L	IMSA
1	GTP	1983-02-06	1983 IMSA Daytona 24 Hours	Preston Henn Racing S	Porsche 935 L	IMSA
4	GTP	1982-11-28	1982 IMSA Daytona Finale 3 Hours	Preston Henn	Porsche 935 L	IMSA
DNF	GTX	1982-10-03	I Fuji 6 Hours	Thunderbird Racing S	Ferrari 512 BB/LM	World Sportscar
2	GTP	1982-09-12	1982 IMSA Road Atlanta 500 Miles	Preston Henn Racing S	Porsche 935	IMSA
DNF	GTP	1982-09-05	1982 IMSA Mid-Ohio 6 Hours	Preston Henn Racing	Porsche 935	IMSA
DNF	GTP	1982-08-22	1982 IMSA Road America 500 Miles	Preston Henn Racing S	Porsche 935	IMSA
DNF	GTP	1982-08-15	1982 IMSA Mosport 6 Hours	Preston Henn Racing S	Porsche 935	IMSA
DNF	GTP	1982-08-15	1982 IMSA Mosport 6 Hours	Preston Henn Racing S	Porsche 935	IMSA
3	GTP	1982-07-03	1982 IMSA Daytona 250 Miles Paul Revere	Preston Henn Racing S	Porsche 935	IMSA
DNF	GTX	1982-06-19	L Grand Prix des 24 heures du Mans	T-Bird Racing S	Ferrari 512 BB	World Sportscar
6	GTP	1982-05-16	1982 IMSA Charlotte 500 Kms	Preston Henn Racing S	Porsche 935	IMSA
11	GTP	1982-03-30	1982 IMSA Sebring 12 Hours	Preston Henn Racing S	Porsche 935	IMSA
15	GTP	1982-01-31	1982 IMSA Daytona 24 Hours	Preston Henn Racing S	Porsche 935	IMSA
DNF	GTX	1981-11-29	1981 IMSA Daytona Finale 250 Miles	Preston Henn	Porsche 935	IMSA
4	GTX	1981-08-16	VI Mosport 6 hours	Preston Henn	Porsche 935K3	World Sportscar
5	Gr.5	1981-07-11	XIV Watkins Glen 6 hours	Preston Henn	Porsche 935K3	World Sportscar
DNF	GTX	1981-06-13	IL Grand Prix des 24 heures du Mans P	Preston Henn Racing S	Porsche 935K3	World Sportscar
1	GTX	1981-05-24	XXVII ADAC Nürburgring 1000 kms	Preston Henn	Porsche 935K3	World Sportscar
DNF	Gr.5	1981-05-10	VI Silverstone 6 hours	Preston Henn	Porsche 935K3	World Sportscar
DNF	GTX	1981-04-26	III Riverside 6 hours	Preston Henn	Porsche 935K3	World Sportscar
DNF	GTX	1981-03-21	XXIX Sebring 12 hours	T-Bird Racing S	Porsche 935K3	World Sportscar
DNF	GTX	1981-01-31	XX Daytona 24 hours	Preston Henn	Porsche 935K3	World Sportscar
8	GTX	1980-08-17	V Mosport 6 hours	Thunderbird Racing S	Porsche 935K3	World Sportscar
13	Gr.5	1980-07-05	XIII Watkins Glen 6 hours	JLP Racing S	Porsche 935	World Sportscar
DNF	Gr.5	1980-05-25	XXVI ADAC Nürburgring 1000 kms	Preston Henn	Porsche 935K3	World Sportscar
DNF	GTX	1980-02-03	XIX Daytona 24 hours	Preston Henn	Ferrari 512 BB	World Sportscar
DNF	Gr.5	1979-07-07	XII Watkins Glen 6 hours	Preston Henn	Porsche 935/77A	World Sportscar
DNF	GTO	1979-02-03	XVIII Daytona 24 hours	Whittington Brothers Racing S	Porsche 934	World Sportscar
7	GTO	1978-02-03	XIII Daytona 24 hours	Preston Henn	Ferrari 365 GTB/4	World Sportscar

Fastest Laps

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Pole Positions

Championship	Date	Race	Entrant / Team
World Sportscar	1981-06-13	IL Grand Prix des 24 heures du Mans	Preston Henn Racing

Wins

Championship	Date	Race	Entrant / Team	Chassis
IMSA	1983-02-06	1983 IMSA Daytona 24 Hours	Preston Henn Racing	Porsche 935 L

Standings

Position	Championship	Year
24	IMSA SportsCar	1982
37	IMSA SportsCar	1981
59	World Endurance Championship	1981
18	IMSA SportsCar	1980
35	World Championship for Makes	1980
19	IMSA SportsCar	1979

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