Stebro exhaust for '90 80q

[Darringer, Chris]

I am just a phone call away from ordering the Stebro rear exhaust
(http://infoweb.magi.com/~andypet/aq90r.htm) for my '90 80q.  I have heard
many positive things about this manufacturer by  members of this list, but
before I commit, I had a few questions:

I would like to keep my ANSA middle exhaust section, if possible.  How
difficult will it be to remove the existing rear exhaust from the middle
section?  

Is there a chance that the existing ANSA middle section will be imcompatible
with the new Stebro rear section? 

Does anyone have any bad experiences with this product that I may have
overlooked in the archives?

Thanks for your feedback,
Chris Darringer
'90 80q