I'd say at that point you are not looking at neary a 35 year old amp. Maybe a 35 year old PT and chassis but the rest is a very new, modern amp....that kicks ass over older and newer amps from my understanding....
You're right - hardware has been removed and replaced with modern components. That is one of the reasons why I added a list of the modifications and that wasn't a complete list either. The topology has remained true to PL though so...