Our poorly cat

Hi, this is abit of a long shot. But it would be Oreos last hope at life.. he is just over a year old , we watched him being born and have adored him every since! Unfortunately he was hit by a car over the weekend.. he will need an operation for him to heal his back legs which is going to cost a small fortune..but I really don't wunna give up on him. He is holding on to life at the moment..i just hope I don't have to put him to sleep .. anything will be massively appreciated. He's the best boy and deserves more then I'm able to afford