try these guys: 
Josh 
Mandrel Exhaust Systems 
info@mandrelexhaustsystems.com 
www.mandrelexhaustsystems.com 
  
They were willing to make an exhaust for a third generation maxima (89-94) with no crazy set up cost like you are talking about with Borla.  I did not get one of these ^^ but a few guys on my fourm did and it sounds like they got a really good deal.  I think the tubing kit was under $150, and it mandrel bent.  Here is the full thread if you are interested in reading it.  http://forums.maxima.org/3rd-generation-maxima-1989-1994/621607-whos-interested-3rd-gen-cattman-2-5-catback.html