Can stock car parts of a newer car go into an older car?

Have a 2011 suzuki sx4 not driveable. Driving around a 99 honda crv.

is it possible to put the deck of the suzuki (already removed) and place into the crv? The speakers are the same size i'm thinking about those as well but is that much of an upgrade?; I can't find the power of the stock speakers to both cars.

Thank you, I had a system in suzuki i removed wanting to put in my crv.

If it was an aftermarket HU yes, you will just need a wiring harness adapter (walmart or ebay) for the crv. If the speakers will fit in the factory mounts then yes you can use those too. If you are talking about a factory stereo I wouldn't bother with it.