Easy as you suspect, I went from MCOR1 to MCOR4 on my daughters 2008 DS and it was a snap.
Just make sure you buy the 'real OEM' stuff/kit from TahoeDawgZ71 (Dave @ Revolution Golf Cars). He's a site sponsor and our resident Club Car guru.
There are a lot of junk knockoffs out there on Ebay and Amazon, stay far away.
https://www.revolutiongolfcars.com/