Look for a "panther" frame on ebay to go for more like a hundred fifty bucks, not $900.00. Also, the straightbar frame which we commonly call "Panther" because it sounds fast and sexy, was the same frame for many models for many years. So, look for that frame and just the frame under 'Schwinn bicycle frame'. Why buy a paint job that's pretty good but will get changed anyway? Why buy wheels you'll replace? Same for the fork and seat (maybe not the seat which is a good one just needing some new padding and upholstery), but you catch my drift. Just look for the bare straight bar frame. That is your rock solid foundation for a great bike. A plus is that it is one of two bikes sportscarpat makes stainless steel in frame tanks for. The other is the Worksman. If you don't plan to go that route, there are other vintage, made in America when it meant something frames out there on ebay. There are a couple of nice builds going on right now on the forum using J.C,. Higgins frames... look very much like the Panther frame. Rollfast is another. Colson, Elgin... just some great bikes out there waiting to be made into something wonderful. Keep an open mind, but also insist on quality and forget $900.00. At some point you or someone you care about will be riding your build faster than is wise with a big smile and a lot of enjoyment. Get a good frame under you, some strong wheels, a reliable motor, good brakes and you will never regret the time and effort it took to make it right. My opinion anyway.
SB