You should have no problem finding a walking foot for this machine - though they are aftermarket and not Singer.
This is just an example - there are lots of sellers offering these. I have no connection these sellers and have no idea if they are good to deal with - I just pulled up the first example I came to.
http://www.ebay.com/itm/Singer-Sewin...item257b281100
As to the FW - you only need to find a short shank foot
http://www.ebay.com/itm/Walking-Foot-Feet-Singer-Featherweight-221-222-Low-Shank-/370587352271?pt=LH_DefaultDomain_0&hash=item5648ba 3ccf