As long, as you haven't got the Bose system, fit what you want.
I replaced the original Bose headunit because the CD player barely worked, the radio reception was erratic and 2 of the speakers were blown.
I bought an Android double-DIN headunit off Ebay to replace it and the Tom Tom that wouldn't charge.
I also bought four new speakers to go in the doors, and replace the knackered ones.
I then ran new speaker wiring from the new HU down the kick-panels and along the sills, splicing it into the original wiring near the door looms.
Disconected the Bose amp finished the job, having gained handsfree connectivity, parking and dashcams, sat nav, and all the audio functions in one neat unit.
The one I bought didn't include a cage, so a lot of dismantling of the console and some ingenuity was required to mount the HU. I finished it off with a Vauxhall specific trim bought from Halfords.