2002 Eldorado Collector Series - paint code for "Aztec Red"

[Richard Sills - CLC #936]

I recently bought a 2002 Eldorado Collector Series (#631 of 1596) in Aztec Red, and am trying to find the correct touch-up paint.  The sticker inside the trunk lid indicates paint code 70, but in Auto Color Library, that code corresponds to a color called "Torch Red".  It looks very much like Aztec Red, but I am surprised at not finding a color name that matches the Cadillac designation.  Does anyone know the answer to this?

Separate question:  Another distinctive feature of the Eldorado Collector Series is the exhaust sound, which is supposed to resemble the sound of a '53 Eldorado.  Does anyone know what parts in the exhaust system are different to create this sound, and whether they are available?

Thanks,
Richard