Scooter, here is the link to the site. Its a PDF file. When I was using it, sometimes it wouldn't pull up. You may want to print it off once you get it. If its outside you won't need the "fresh air vent" from the outside. You also won't need the damper in the fireplace. I put one in because I just happen to have one from a tear down we did. If you have a working knowledge of brick and block work, you won't have any problem. The foundation is the most important. I poured my footing 13in. thick with a double grid of 1/2in. rebar. There's about 9 tons of weight sitting on mine.
If your looking to build a smoker similar to mine, let me know and I can give you more detail. If I were to do mine over, I'd make the oven part a couple inches bigger all the way around. Its awesome as is, but it could stand to be a little wider.
Here is the link to the fireplace site:
http://www.yourwayfireplaces.com/docs/GoodPractice.pdf
Here is the link to my build here at SMF:
http://www.smokingmeatforums.com/t/126307/brick-smokers
I have tons more pictures then what are posted in the build. I'd be more then glad to share them. The metal fab work I can't help you with. I told my brother what I wanted and he built it for me.
I'd love to see a brick smoker topic here, but I guess there's not enough interest.
PM me if you have any questions or problems. I have all my research in bookmarks, so if you need to know where to get something, I've already found it at the best price I could find.
I like your picture. I would make it a bit taller though.
Let me know if I can help in anyway
Wes