First car was easy peasy....2006 Ford Focus...had an existing Alpine radio in there, single din....removed it, installed this new Pioneer AVH-X490BS Bluetooth Multimedia Headunit in it's place and retained the factory steering wheel controls.
Next up was his 2006 Lincoln MKZ Zephyr.
This was a challenge.
It had the OEM THX 11 Speaker Navigation system installed and that's one they don't make a bypass for....or anything for that matter.
So I had to custom build a dash kit to fit the unit and then bypass the THREE oem amplifiers in the rear.
We lost the rear doors and front/rear center channel speakers...but retained the front components and rear 6x9 woofers...so this system still sounded pretty good .