Look into the Ebay 3" exhausts, they are very high quality and MUCH cheaper than what you're looking at. The one I got for the Eclipse is "SRS" brand but its basically an Apex'i knock off. Great fitment.

Here's one for a 240SX (3") from the same seller:

89 90 91 93 94 92 240sx s13 sr20 3" SS CATBACK EXHAUST :eBay Motors (item 350204400742 end time May-27-09 11:53:23 PDT)

I'm sure you can find downpipes on there too but my setup for the 420A is custom so I didn't look.