Can I install Importmap or JS/CSS Bundling alongside Webpacker on Rails 6?

Looking to potentially install Importmap or JS/CSS Bundling alongside my existing Webpacker installation in my Rails 6 app. The idea is to test and migrate existing UI code over ahead of a Rails 7 upgrade. Has anybody has any success with this? I've done some basic installs and have run into errors with both, and don't want to spend a ton of time debugging something that's ultimately not going to work anyway. Thanks!

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