I have that machine. Singer 758. Thought I was only one in the world with it. I purchased it in Spring of 1976 to make my daughters layette. i still use it. At the time i paid several hundred $$ for it. Computerized machines were just starting to arrive on market. I did not trust them, so glad I waited. I told sales person I wanted one like best computerized model that did everythin "new" one did without being a computer. Good machine, like all old Singers. You got a good buy on a good machine. It does not have a walking foot that fits. At least I can not find one, but quilts beautifully without it.
DH takes off bottom to clean & oil after I finish each quilt.
Enjoy. Mine was hospitalized awhile ago, so I dug out my Mom's Singer 320, Quilts even better. Also I feel like Mom is guiding my hands.