I think any automotive type radio you wish will fit in the hole. The dimensions are pretty standard today. Just make sure you have a grip on what speaker wires go to what speakers. If they're not marked, you can use the process of elimination. I was gonna replace mine with something higher quality but it turns out...we don't hardly ever use it. I probably would use it more if there were a remote control for it. Every time I crawl across the bed to turn it on...I fall asleep.
2018 THOR Chateau 35SF
Two Labs, Bugsie & Blondie