im alittle on the other side of the topic here but shouldnt u be more concerned about helping ur mother out with the 20g rather than thinking about getting a skyline...

anyways if he was court ordered before u became of age which im assuming he was since he owes back pay he is still responsible to pay . the thing is and im not sure he might also go to jail for not paying.. like someone else said get a lawyer and get one that will work on a percentage of the winnings not one that s going to charge u houhrly. god luck .....