Viper Geneology?

[Marv S]

for the GTS:
http://www.edmunds.com/used/1997/dodge/viper/gts.html#whatsnew

For the RT/10:
http://www.edmunds.com/used/1997/dodge/viper/2drrt10convertible.html

The site also lets you change years. Look under the "what's new" tab.

Also, the IRV is a source http://www.viperclub.org/IVR/vin.html http://www.viperclub.org/specs/