Where can I place a misbehaved Asperger's child?

I have a son who just turned 16. He is an Asperger's Syndrome child. He cannot make any friends, performs poorly in school and frequently gets into trouble. All he can really do is play video games. He has very poor social skills, scores low in testing on verbal communication skills, and frequently gets into trouble when in the supervision of anyone other than his father. He always curses and says inappropriate things. He gets into trouble for anything from fighting (not too often tho) to just flipping people off or calling them names and saying inappropriate bad words. He has been in and out of mental hospitals in his younger years, and at this point, at 16 years of age I am unable to FORCE a behavior change in him. I am desperate to do something for him but he needs something like a group home for kids such as himself. He needs severe behavior modifications enforced. Ive already accepted the fact that he may never be on his own or ever be able to get a job and support himself when he becomes 18. I am desperate. I fear the worst. Is there a placement or some sort of group home for troubled children of this type that could work miracles for him? I also want to marry this woman who accepts him but her 2 younger children cannot continue to be victim to his abuses. I feel helpless. Does anyone have an answer for me?