4.0 timing chain

Has anyone done a timing chain relacement in a 4.0 Wrangler? Looked it up on the internet, and they said about a 3 hour job. Just wondering if that is a realistic number or not?

I can do it in half that time lol ask Eric how long it takes me to take off a 4.0 head haha. But yea if you need help let me know.

Ok Cool thanks