Should I blow all my money on my gt or save for a cobra?

Well I've spent about a total of 15k on this car (counting buying the car) The car was 12 and I spent about 1.5k in repairs and 1.5k on rims, new radio, speakers, etc.

In 3 and 1/2 years I'm hoping to sell this car for about 8k and I will have about 12k saved up for a new car. So that's 20k to go towards a new car.

Basically after buying my first mustang gt I am addicted to them so I can't even look at any other car the same anymore :p Should I spend 20k and get a bonestock cobra and earn some more money and slowly build on it or should I buy another mustang gt for about 15k and spend that 5k on other things to build it up?
 
Well I've spent about a total of 15k on this car (counting buying the car) The car was 12 and I spent about 1.5k in repairs and 1.5k on rims, new radio, speakers, etc.

In 3 and 1/2 years I'm hoping to sell this car for about 8k and I will have about 12k saved up for a new car. So that's 20k to go towards a new car.

Basically after buying my first mustang gt I am addicted to them so I can't even look at any other car the same anymore :p Should I spend 20k and get a bonestock cobra and earn some more money and slowly build on it or should I buy another mustang gt for about 15k and spend that 5k on other things to build it up?

well if you were going to buy another mustang and keep the one you have you might as well get a cobra cause it will already be built for power. but if you just want to sell your car or keep it i would keep it and mod the crap out of it. 15k in your GT would make for one very very fast car. built motor and blower and building drivetrain for some insane launches would be about 15gs if you do your own work.