We have 2 UD Challenger Books & Manuals

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Abarth, AC , Acadian, Acura, AJS, Alfa Romeo, Allante, Allard, Allis Chalmers, Alpine, Alvis, AMC, Amphicar, Anzani, Aprilia, Arctic Cat, Ariel, Armstrong Siddeley, Aston Martin, Auburn, Audi, Austin, Austin Healey, Auto Union, Autobianchi, Automatic Trans, Avanti, Ballot, Bandini, Beardmore, Bentley, Bertone, Bikes, Bimota, Bitter, Bizzarrini, BMW, BMW Bikes, Boats, Bodywork, Boeing, Borgward, Bosch, Bricklin, Briscoe, Bristol, British Leyland, BRM, Brough Superior, BSA, Buell, Bugatti, Buick, Bultaco, Cadillac, Capri, Carburetion, Case, Caterham, Caterpillar, Cessna, Checker, Chevrolet, Chilton, Chris Craft, Chrysler, Chrysler Boats, Cisitalia, Citroen, Clenet, Cockshutt, Columbia, Cord, Coventry Climax, Crosley, Cunningham, CZ Jawa, Daewoo, Daf, Daihatsu, Daimler, Datsun, DeDion, Delage, Delahaye, Delorean, DeSoto, DeTomaso, Detroit Diesel, Diamond Reo, Dictionary, Divco, DKW, Doble, Dodge, Douglas, Ducati, Duesenberg, DuPont, Duryea, Eagle, Edsel, Elcar, Elva, ERF Trucks, Excalibur, Excelsior, Facel, Ferrari, Fiat, Fisher, Fisker, Fleetwood, Ford, Francis Barnett, Franklin, Frazer Nash, Freightliner, General, General Automotive, General Custom, General Motorcycle, General Repair, Genesis, Geo, Ghia, GM, GMC, Goggomobil, Gregoire, Harley Davidson, Haynes, Hesketh, Hillman, Hispano Suiza, Hodaka, Holden, Hollander, Honda, Honda Bikes, Honda Marine, Hot Rod, Hotchkiss, HRG, Hudson, Hummer, Husqvarna, Hyundai, Indian , Infiniti, Innocenti, International, Invicta, Isetta, Iso, Isotta Franchini, Isuzu, Jaguar, James, Jap, Jawa, Jeep, Jensen, John Deere, Johnson Evinrude, Jowett, Kaiser Frazer, Kawasaki, Kawasaki Boats, Kenworth, Kia, Kissel, KTM, Kubota, Lada, Lagonda, Lamborghini, Lambretta, Lanchester, Lancia, Land Rover, LaSalle, Laverda Bikes, Lea Francis, Lexington, Lexus, Leyland, Lincoln, Lotus, Lucas, Mack, Marcos, Marine Boats, Mariner, Marmon, Maserati, Massey Ferguson, Matchless, Matra, Maxwell, Maybach, Mazda, McFarlan, McLaren, Mercedes, Mercruiser, Mercury, Mercury Boats, Merkur, Messerschmitt, MG, Military, Miller, Minerva, Mini, Mitsubishi, Mitsubishi Fuso, Montiverdi, Moretti, Morgan, Morris, Moto Guzzi, Moto Morini, Motorhome, MV Agusta, Napier, Nash, Nissan, Norton, NSU, Offenhauser, Oldsmobile, Oliver, OM Truck, OMC, Opel, Osca, Packard, Panhard, Pantera, Perkins, Peugeot, Piaggio, Pierce Arrow, Pininfarina, Piper, Planes, Plymouth, Polaris, Pontiac, Porsche, Pratt, Proton, Puch, Racing, Railton, Raleigh, Rally, Rambler, Range Rover, Reliant, Renault, Reo, Riley, Rolls Royce, Rootes, Rover, Royal Enfield, Rudge, Saab, SALE, Saleen, Salmson, Saturn, Scania, Scarab, Scion, Sea Doo, Seat, Seddon, Shelby, Simca, Singer, Skoda, Sleds, Smart, Stanguellini, Stanley, Sterling, Studebaker, Stutz, SU Carb, Subaru, Sunbeam, Suzuki, Suzuki Bikes, Suzuki Boats, Talbot, Tatra, Tesla, Toyota, Tractor, Triumph, Triumph Bikes, TVR, Vauxhall, Velocette, Veritas, Vespa, Vincent, Volkswagen, Volvo, Volvo-Penta, Wartburg, Waukesha, Weber, Westfield, White, Wills Sainte Claire, Willys, Winnebago, Winton, Wolseley, World Car, Yamaha, Yamaha Boats, Yanmar, Yugo, Zagato, Zenith