FS Pioneer NEX4000

Perfect working condition. It's been a fantastic head unit and I would be keeping it if my truck didn't come with a nav unit. Looking to get $300

The faceplate is detachable if you need the security
It will come with the wire harness for an 07 sti. I'm not sure what other years match but I'd assume it's a few.
It doesn't have NAV but it supports apple play and will announce your directions if you don't have apple car play going.
HD radio is nice and comes in clear.
Touch screen is responsive and works great
Lots of customization available within the system to make it your own user experience.

 

This is sold, can be locked.