It is amazing how every topic gets made into a Pam topic.
Anyways, your project idea can definitely be done. First you need a custom case. Rep cases are too big. Your watch is only supposed to be 35mm.
Next, the val. 23, but remember the Rolex plate.
The most important part, high quality dials for it are available on Ebay.
http://cgi.ebay.com/ROLEX-OYSTER-CHRONOGRA...VQQcmdZViewItem
Buy the hands, crystal, put it together and you will have a beautiful watch.
Or, you can just pay $28K for a real one.
Regards.