You can’t get there 100%, because you need the default building blocks which cannot simulate disneydiffuse and rough fresnel (that matches principled), and principled can’t use colored glossy. Ignoring these limitations, you’ll get close enough. Can get a bit messy if you try to account for several implementations, depending on how you do it I guess. I tend to always try to reduce things to multiple uses of same nodes, and I tend to regret it 