Rem700,
This question was sure to open up the religious war about what constitutes a "real" Hawken. I've been lurking for a while too, and posted a few questions/comments now and then. This is one question that keeps coming up and keeps getting the same responses, over and over.
In my opinion, the only Hawken is one that was made by the Hawkens or their employees. Period. Everything else is a copy.
Some rifle makers make outstanding copies of individual rifles. Accurate to every detail... Still a copy.
I suggest that you locate the following books that can help you learn more about Hawken and Plains rifles.
1. Hawken Rifles, The Mountain Man's Choice by John D. Baird
2. The Plains Rifle by Charles E. Hanson Jr.
3. The Hawken Rifle: Its Place in History by Charles E. Hanson, Jr
I have all three. The first two will cost you as they are out of print and getting rare. The last book can be purchased from Track of the Wolf, where I got mine. Just so you know, I paid $68.00 for the first on in the list.
Lots of folks will try to tell you that there is a great mystery about Hawken rifles. Nonsense. There is no great mystery. The Hawkens made rifles that individuals wanted. Therefore, every one was different. Just look at the photos on page vi and vii of Baird's book. Every one is different. Also check out the differences between early and late Hawken rifles. Many of the early rifles looked alot like Kentucky rifles, but heavier. The early ones were very plain, no snail and heaven forbid, a cleanout screw. It's right there in the picture on page 22 of Baird's book.
The fact is that of the 2-3 thousand that apparently were made, very few have survived, so no one really knows what most of them looked like. They could have looked just like your GP rifle for all anyone knows. What we have are copies of individual rifles.
The Lyman Great Plains rifle is a good looking rifle and shoots well. It is well made and should provide you with a lifetime of shooting if you treat it well. Who cares what others think of your rifle. Like others said, it's kind of like insulting a guy's wife and it's really getting a bit tiresome.
Not everybody has thousands to spend on a "real" Hawken.