Here are the makes that show up in my collection
Alfa Romeo
Aston Martin GT
Aston Martin prototypes
Audi prototypes
Audi GT
Ada
Auto-EXE
Acura
Alpine
Bentley
BMW touring
BMW GT
BMW proto
Cadillac
Chaparral
Chrysler
Citroen
Corvette
Courage
Creation
Dallara
Dauer
DBA
De Tomaso
Dome
Durango
Dodge
De Cadenet
Ferrari - classic GT
Ferrari - modern GT
Ferrari -250 & 330 prototypes
Ferrari - 312 & 512 prototypes
Ferrari 333 SP
Ford - prototypes
Ford - touring
Ford - engines
Ginetta
Gillet
Inaltera
Jaguar
Kremer
Lamborghini
Lancia
Ligier
Lister
Lola
Lola classic
Lotus
Maserati
McLaren F1 GTR
McLaren CanAm
Mazda
Mercedes - Benz
Matra
Mirage
Morgan
Marcos
MG
March
Nissan
Nimrod
Opel
Oldsmobile
Peugeot
Panoz
Porsche 906
Porsche 908
Porsche 917
Porsche 911 RSR
Porsche 934
Porsche 935
Porsche 936
Porsche 956
Porsche 962
Porsche 924 / 944 / 959 / 961
Porsche GT1
Porsche GT2
Porsche GT3
Porsche RS Spyder
Pilbeam
Pescarolo
Pagani
Radical
Renault
Reynard
Riley & Scott
Rondeau
Range Rover
Saleen
Sauber
Shadow
Spice
Spyker
Sigma
Schlesser
Schuppan
Toyota
TVR
Transporters
Volkswagen
Venturi
Vaillante
WR
WM
WSC
Zytek