GeeBee,
This is an old post when I was thinking of going the TD route on my 82 Vanagon, but I'm leaning more towards a 1Y (1.9na) engine or a ADG 1.9 engine.
I'm more familiar with my 1.6 so the learning curve is easier. From what I read, if you can't support your conversion, then might as well not convert. With that advice, I'm going a lateral move with the 1.9na just a bit more hp.
Now, I'm thinking about a possible AAZ and stripping the turbo and when I'm more comfortable put it back on.
Thomas at Quality german Auto, is high on my list; however, I'm also open to other options.
I'm at least a year or two away. I need to get other supporting work done (radiator upgrade, wheel upgrade, new springs, lift kit, exhaust/intake, and a giles pump.) before I attack the 1.9na conversion.
Decisions decisions

quote author=GEE-BEE link=topic=35032.msg332082#msg332082 date=1407817756]
Try Thomas at Quality german Auto in Montclair
Why a AAZ ?
T2/T3 will be hard to find
k14/k24
these are early models
[/quote]