its not that tough of a job, ive done it twice on my old blaster, you might not need to get the carrier (once you have it apart then you can decide what all you need). there should be an axle sleeve in there too that might be torn up
1st find the master link on the chain and seperate the chain.
then tires, hubs, axle nuts, sprocket hub, brake caliper and rotor, then pull it out or beat it with a BFH depending on how bad its torn up inside