There was a review of this machine on Sewing Pattern Review, also a few other sites had info about it being a low shank, oscillating hook, 3/4 size machine, .89 Amps. From the photo of one on Goodwill.com, it is clearly a low shank or short shank foot machine. I think I read on Sew Classic that a rotary hook is better for free motion than an oscillating hook, never know till you try. Officially, this is called an Ultra Stitch 8. You say you're looking for a walking foot; Sew Classic also has good info about choosing a walking foot.