hey dude, welcome to the forum.
aussie sprinters didnt come with LSD nor the 4AGE engine, we only got the 4AC (carby) engine. most people that buy the sprinter swap the engine out anyway.
rust is a common problem here aswell, also because the sprinters are just over 20 years old. prices for sprinters range around AU$3000 (standard aussie spec) upto $14,000 for some pretty nice sprinters with 20 valve or supercharged motors...
have a look around the site, theres lots of stuff you'll find.
cheers.