So I was thinking.....

Putting an aftermarket headunit in the wife's lunchbox so she can have nav. The deck in there now is quite nice for stock. My question is can I put that in the TL. I don't want to get aftermarket for it because I don't really have the funds for both and think it would be cool to keep the TL "stock". The lunchbox is an 07sc so it has the ungraded stereo with stock sub. Curious what kind of problems might arise if it is possible to swap it in.