This is the 11' 2/3 the 12' 2/3 uses the same number of guides but the spacing is different. These were guide sizes and spacing from Steve Godshall. I will do the run down of parts.
Cork - Flor, burl, rubberized - Mogos cork Ebay
Reel Seat - #107 Ye Old English fly shop - Ebay
Guides and spacing for 12' 2/3: 12 (107.8"), 10, (89.2") 4 (73"), 3 (58.8"), 2 (46.5"),2 (35.8"), 2 (26.5"), 2 (18.5"), 2 (11.4") , 2 (5.3"), large loop tip top. All measurements from tip top to back edge of guide
I used Snake Brand Universal guides which are more expensive but the curved foot on them makes wrapping them a dream. I used #12 and #10 Hard Chrome boat guides from Anglers Workshop. I went with YLI 100 Silk but I recommend as others have size A Nylon and I use Spar Varnish as it is easy to work with, easy to just cut off a wrap if you make a mistake and pretty forgiving for the novice builder. Varnish takes multiple coats, Ace hardware Spar varnish, Cabot (Lowes) or even Minwax Spar urethane applied with a bodkin and rotated by hand works fine.
This is the 5th rod I have ever built, I also built the 11' 4/5 from Anglers Roost and a couple of his Fiberglass single hand rods.