I have a tunnel extension on my 02 Viper, and would like to install a rear heat exchanger, can I still use the SRX one or do I need one from a mountain viper? what I'm asking is can I use the same one I would use for a standard viper or is there a different one I should look at? I didn a search and didn't find anything about this, also searching on ebay came up with 2 different looking rear heat exhangers. any help is appreciated!