I hope it works. I've heard of headunits that sit for a long time without being used have some problems. The silicone used for the CD spindle dries up and it will not turn the disc. Not saying you'll have those problems but I had a Denon DCT-950R I bought of ebay that had never been used and it won't spin a CD.Alpine CDA-7941 just like my signature from 1998 or 99, dont remember.
Believe it or not, its still brand new, never been mounted or even powered up because I didnt have a car I felt worth the effort until recently.