http://www.theglen.com/Tickets ... -Grand-Prix/Schedule.aspx
entry list, but no groupings that I found... I'm officialy jealous of you
EDIT:
Race Car Groups:
Group 1: Recognized small displacement production sports cars and sedans. Examples: Sprite, Midget, Mini Cooper, Triumph Spitfire, Alfa Romeo Giulietta, MGA, Fiat-Abarth, Lotus 7. Select G and H-modifieds and D-Sports Racers, Formula Vee.
Group 2: Pre-1973 Formula cars conforming to the SVRA classic formula car regulations. Other cars may be accepted by invitation as appropriate. Examples: Lotus; Brabham, Caldwell, Titan, Crossle, Merlyn, Royale, Elva, Hawke
Group 3: Recognized series-produced sports cars and sedans in production prior to 1972. Examples: MGB, Triumph TR-3 and 4; Austin Healey 3000, Porsche 356, Elva Courier, Morgan, Daimler, Sunbeam Alpine, Volvo P1800
Group 4: Limited produced sports cars, racing “specials” and GT cars built or in production prior to 1960. Other appropriate cars by invitation. Examples: Scarab, Devin, Maserati, Ferrari, Lotus, Jaguar XK120/140, C, D; Maserati, Lister, Allard, Elva; Porsche RSK Spyder, Cunningham
Group 5: World Sports Car Championship and World Manufacturer’s Championship GT’s and prototypes as raced between 1960 and 1972. USRRC sports cars and Can-Am cars as raced before 1969 with invited later models. Front engine “specials” as raced after 1959.
Examples: Lotus 23, 30, 40, Porsche 904, 906, 907, 910; Elva Mk 6, 7, 8; Ford GT40, McLaren, Lola T70, T160, McKee, Chevron
Group 6: Selected big-bore production sports cars and sedans through 1972. Examples: Corvette, Shelby GT-350, Cobra, Mustang, Camaro, Jaguar XKE, Barracuda, Cougar, Griffith, Porsche 911
Group 7: Can-Am cars as raced after 1969 on slicks. World Championship for Makes sports cars as raced after 1970 on slicks. Under 2.0-liter sports cars as raced after 1972. Center-seat Can-Am cars. SCCA, ASR & BSR, Sports 2000. Examples: McLaren, Porsche 908, 917, 956, 962; Lola, Chevron, Ferrari 312, 512, Alfa Romeo T33, Lancia, Matra
Group 8: Recognized series-produced sports cars and sedans in production prior to 1979, and later cars by invitation. Examples: Lotus Super 7, Datsun 240Z, BMW 2002, Sunbeam Tiger, Porsche 911, 914, 924, 944, Datsun 510, Escort, Alfa Romeo GTV
Group 9: Wings and slicks formula cars complying with SVRA post-1973 formula car regulations. Examples: Formula 1 and Indy Indy Lights, Formula 5000, Formula 2, Formula Atlantic & Formula B (1600cc); Formula Super Vee (1600cc, air & water cooled); Formula Continental and Formula 3 (1100cc)
Group 10: IMSA and FIA/GT sports cars and sedans as raced between 1973 and 1999. Examples: Porsche RSR, 934, 935, 964, 993, Chevrolet Corvette, Monza, Camaro, Ford Mustang T/A, Nissan, Toyota, Mazda RX-7