Open Question: Do i need to buy a replacement hub to install a JDM steering wheel on my car?

I have a 2003 hyudai sonata. i was already told that to remove the wheel i will need to disconnect the battery for some time due to having an air bag. I already have the steering wheel. some sites are telling me i need an additional hub of some sort. others tell me i dont. i dont wanna take the wheel off and have to need a hub if i dont have one on hand. thanks in advance for the help.