avic z120bt should i or not

vrfreak

just a couple hours ago i still owned a 06 350z and i bought a pioneer HU avic120bt for it 2 weeks ago but didnt get it installed yet cuz i was waiting for them to get the sirius sat tuner anyways....
today i picked up a brandnew 2012 370z touring with non navi bose HU now i am debating if i should go ahead and get the deck installed or if i should sell it and just go with the stock HU and i have a few ??? bout it
so here it goes:
1. will the original sat. antenna provide me with serious sat radio on the avic120bt
2. are all the steering controls still working after the install
3. what will i need for the install besides the dash kit (probably or not)

thank u guys in advance i hope i can still make use of the unit since realy like it!!!