I would suggest you start with a TC like others have said. I just received my 16610LV from TC and it feels more gen than my franken 16800.
Stock TC LV on right (he also makes a 16610ln which it sounds like you're after)
16800 with gen dial, bezel insert, crown
Ive never heard of a solid 18k rep. Very, very cool.
Give it some wrist time, it deserves it!
More out of curiousity than anything, when were these produced?
http://www.ebay.com/itm/Vintage-Valjoux-72-Daytona-6263-6239-with-Steel-Oyster-Band-Working-Order-Watch-/131088894999?pt=Wristwatches&hash=item1e8581cc17
Just listed on eBay... Thoughts? I'm not too well-versed in vintage Daytonas, but it looks like what is built on the forums.
Possible Phong/ DW parts?