how about WS 10 Chinese engine. is it OK & fulfil all your requirements.
have a read please, numerous photos show WS-10a are now fitted onto J-11B for active service.
http://www.defence.pk/forums/china-defence/42615-j-11b-equip-ws-10a.html
please be aware, this is not a "test", test photos have been there for several years. this is a J-11B in active service painting and I assume you understand the difference.