Of course, Star Wars is already about anachronistic technology. There's a swordfight-- but it's in the future! There's a dogfight-- but it's in the future! Chewie's crossbow shoots plasma. The Star Destroyers are covered in rivets.
Steampunk sets Star Wars in an alternate future of our own past. If you like this sort of thing (Steampunk, I mean) I recommend The Difference Engine, by Gibson and Sterling.
These images are from this forum. I'll post my own addition soon (a picture of an ornithopter called The Centennial Falcon, piloted by a hairy Russian named Subakov.)