I don't know the rifle specifically but I don't really see all that much to get excited about. Stock is new/repro fer sure, rear sight is later, lots of little parts are not gastrap era, I would guess that most of the hard parts like barrel and gas cylinder are repro too, and no idea if they bothered to try to get even repro keystones or type 1 rod let alone real ones ...
If you want to make one yourself, there are lots of the little numbered parts still around and with patience you might actually be surprised at what you can put together in a relatively short time. Many guys have built up early recievers with as many early parts as they can (or some era thereafter).
Here is my gastrap resto
. When I started out I tripped over a few really early parts and it kind of snowballed from there. It took me about a year to acquire this little pile (back when it wasn't nearly as pricey as it is now), but after this point it starts to get really difficult and much more pricey.
I haven't really tried to go beyond this though as there are more enjoyable ways to spend your had earned money and time, like ...
Do you have any more specifica questions?