Apparently if you search for part # 121G on the O'Reilly's Auto Parts website it takes you to a page for Flux Capacitors. Unfortunately, it doesn't look like they're currently in stock. Man, how sweet would it be if we lived in a world where you could just order a time machine online? Could you imagine? The world would be so screwed from people constantly trying to travel back in time and fix things and screwing them up even worse. Not me though, I'd just be back in prehistoric times chilling with the dinosaurs. *fast-forward to now* "What's up with all the lizard people?" You can't prove that was me.
Thanks to GlenMakes, who's "personally not interested because my other car is a Millennium Falcon and Jesus is my Co pilot." That's pretty sweet too.