trick to removing 5kcstq downpipe from turbo?

[auditude at neta.com]

As the subject line asks, is there a trick to removing the downpipe 
from the turbo on a 5kcstq?  

I'm trying do the clutch on my 5kcstq, and I've got the downpipe 
disconnected from the wastegate, and most other stuff removed.

It's so tight in the area, and I'm not sure what makes the best 
sense to remove to get room to work in there.  It seems like if the 
airbox wasn't there it'd be easier.  The head shield protecting the 
engine mount is in the way of the bottom bolts.

After the downpipe, I think I have the shifter linkage and the diff lock 
hoses, as well as the cursed slave cylinder, to remove.

I read some posts about a roll pin punch.  Does anyone happen to 
know the correct size for the roll pin holding the slave cylinder in 
place?  I have time to buy the tool if need be.  But my main 
obstacle is the downpipe currently.

Thanks,

Ken