I've put a Sony XAV-AX1000 head unit in mine (2018 FG4x4) and JBL GX402 speakers in the doors. The Sony went in without a hitch after adapting the wiring harness. The GX402s almost don't fit under the door cards so a less deep speaker might be better. Following Decanter's example on Instagram I pulled the interior out and insulated with Noico sound deadening mat and foam insulation. It's not perfect but it's a big improvement over the factory setup!