[200q20v] Crankcase breather hose replacement

[Gorman, Ken (PA62)]

Listers,

After inspecting my crankcase breather hose, I noticed it was soft and
spongy and had deteriorated in a few places.  I went to the local audi
dealer and picked one up for about $100.  While there, I also bought a turbo
bypass valve for $40 - the one on the car is original and the car has 160K
miles.  Also, on occasion (once/week), the car stalls.  The conventional
list wisdom is to replace the valve.

I went to Chris Miller's site for advice for the crankcase breather hose.
On my previous 1990 Audi 200 turbo, the change was simple.  Everything is
easily accessible and the hose is held on by hose clamps.  On my current 91
3B engine - things don't look so easy.

How long would you estimate a job like this would take for someone with a
lot of patience, but not much experience.  Is this an hour long job I could
tackle this weekend, or should I just go to a dealer who has seen this
numerous times and could do it much quicker.  Does anyone know the shop rate
(in hours) for changing these 2 items?  

Thanks,

Ken