I have been using and still am using the SP-350 and love that this model has the fully programmable 'My Mode' feature and can shoot in RAW. I will admit that RAW slows the camera down and the shutter lad has always been unfortunate. But this camera is still a great entry level option. A shame it has been discontinued but I still see people out there using them and holding on to them carefully!
Sorry, there are no housings found for that camera model. There's a good chance that a housing just doesn't exist. However, if you know of one, we're all ears! Contact us.