Or you could try your luck farming a 2000 birthday ticket, or level 21 ticket. It will be a huge task but it's nowhere near as hard as finding one in the ucd.
The 2000 birthday ticket is not a good idea. Chances are 1 to 91!
You can only get 26 different cars from lv 21 ticket hence chances are much higher. Anyway I received my Ford XR8 after an hour or so from a lv 21 ticket. I don't know why people got so much trouble with it. If you just can't get it then try to get two level 21 tickets to double your chances. Here is what you can get from a lv 21 ticket:
Amuse S2000 GT1 Turbo
Bugatti Veyron 16.4 '09
Chaparral 2D Race Car '67
Chevrolet 2010 Dale Earnhardt Jr. #88 AMP Energy/National Guard C
Chevrolet 2010 Jeff Gordon #24 DuPont CHEVROLET IMPALA '10
Chevrolet 2010 Jimmie Johnson #48 Lowe's CHEVROLET IMPALA '10
Chevrolet 2010 Juan Montoya #42 Target CHEVROLET IMPALA '10
Chevrolet 2010 Tony Stewart #14 IMPALA
Chevrolet Camaro LM Race Car
Citroën GT by Citroën Race Car
Dodge Viper GTS-R Team Oreca Race Car #51 '00
Ferrari 330 P4 Race Car '67
Ford AU 2000 Ford Falcon XR8
Ford 2010 AJ Allmendinger #43 Best Buy FORD FUSION '10
Ford 2010 Carl Edwards #99 Aflac FORD FUSION '10
Ford Ford GT LM Race Car
HKS CT230R '08
Jaguar XJ220 LM Race Car
Lamborghini NOMAD Diablo GT-1 '00
Lister Storm V12 Race Car '99
Nissan XANAVI NISMO Z '06
TVR Cerbera Speed 12 '00
Toyota 2010 Brian Vickers #83 Red Bull TOYOTA CAMRY '10
Toyota 2010 Denny Hamlin #11 FedEx TOYOTA CAMRY '10
Toyota 2010 Joey Logano #20 The Home Depot TOYOTA CAMRY '10
Toyota 2010 Kyle Busch #18 M&M'S® TOYOTA CAMRY '10