Went to Oiri Ramen (on Cyril Magnin) last night. It's my favorite ramen house in SF, and I've been going there for over 7 years now. I saw the yellow sign on the window -- change of ownership. I asked the head waitress and she informed me that they'd be changing over on Thursday and the new owner may/may not change the menu. Don't take any chances, get down there and have ramen now in case it's all over soon.
They even offer a really decent vegetarian broth for those types.