Pm best price for 8" Sonata HU but uninterest on the TV antena?

1. Plug and Play HU?
2. Steering button still function for new HU?
3. Does the original USB and Ipod connector still working?
4. Warranty Period?
5. GPS included? What kind of GPS installed?
6. Reverse camera required to drill hole on the car boot, any sample photo?
7. Sound quality compare to ori HU?

Thanks.