Since you are most likely doing this for the sound effect only I would just put in an X-pipe like Dean has.
If you would like to know where the pipe should be for best performance gains, it would go after the header collectors at a distance of approx. 12-18 inchs. This is not going to happen on a Viper.
H and X-pipes will basicaly do the same thing, but have subtle differences in where in the rpm band they acheive some positive effect.
The H or X-pipe will more than likely have zero performance gains being in the back of the system.
If you would like to know where the pipe should be for best performance gains, it would go after the header collectors at a distance of approx. 12-18 inchs. This is not going to happen on a Viper.
H and X-pipes will basicaly do the same thing, but have subtle differences in where in the rpm band they acheive some positive effect.
The H or X-pipe will more than likely have zero performance gains being in the back of the system.