We are now carrying a 3" polished stainless steel catback exhaust system for the Turbo Regals.  All hardware and clamps are included.  Mufflers are a straight thru design for ultimate flow.  I just finished installing one of these systems on my own GN.  Did it in my garage without a lift, can be a little tough to do but it is possible.  If you have access to a lift it would be a lot easier!  Some trimming of the pipes and your downpipe MAY be needed.  My GN is lowered quite a bit so if your Turbo Regal sits at stock height you should be fine.  Sounds really nice!  I just upgraded from a Hooker 2.5" catback system and it is louder than that system but NOT obnoxious at all until you really hit the gas!  As a bonus, this system is actually about 18 lbs lighter than the Hooker system it replaced!

Below are some pictures of the installation on did on my own GN.  Notice that I used stainless steel step band clamps at all connections.  I recommend using them as it makes it easier to adjust the system and to remove it intact if so desired.  The traditional clamps you see in the pictures below were just used for the hangers.  I am now offering the step band clamps as an option in the drop down menu below.  If you choose this option you will receive 4 of the band clamps in addition to the regular clamps included with the system.