Yeah, try it. It's very easy. Learned how to make these icons after watching 40 min tutorial video + googled some how-to's 😃
Added 1 day later:
ok so all stock icons are replaced:
catalog icon is upscaled(from 64 to 128) because it is used in car catalog in bigger form.
only 6 icons from MWM left
Added 15 days later:
attempt to convert engine sounds from FM4!
no sounds where edited, all the magic is in scripts 😃
this is not final, i'll improve them more.