Welcome to the forums! If you look at the blue toolbar you will find a search function. You might give it a try to key in the 17' Sport or the exact name of the model you are interested in. I haven't seen one either... I do know they have some new models that are "narrower" much like the vintage models. We have a 1963
Bambi that is 16' from hitch to bumper and love the little thing! You might also see if there are any rallies in your area before too long and attend... you might not see the one you are looking for, but you will get to talk to Airstreamers and get everyone's take on what is good/bad/and ugly... If you are planning on doing some real travel with distance you might also check out this thread, has good food for thought.
Mrs. NorCal Bambi (traveling in S Tardis)