Im gettin ready to purchase the rear disc conversion for my EJ, Im having trouble figuring out what to purchase.

Some vendors say it come with brake lines and some say without???? (confused)

I've also heard people say if you swap to rear disc you also have to change out your brake booster, master cylinder and calipers to Integra parts. Is this correct?
Can't I use my existing parts and the calipers that already come wit the conversion??

After I have made the purchase is there any maintenance I need to do with the conversion before installing?? Like new rotors, etc....

Thanks for the help