What perfect timing! We've been playing with the Viper GTS Launch Edition '13. I've made some adjustments to the suspension to reduce oversteer and my driver is a bloody wizard with the car; I've decided it to take it from my 10yo son and give it to him (will buy the boy another one, perhaps the model you've mentioned).
The thing I haven't done is the transmission, beyond adjusting the final gear to make it top out at about 220mph - it sits at around 780hp depending on which race he's doing.
My question is, do any of you have a tune for this model, especially the tranny? I've noticed that tunes for even slightly different years/models of the same car do not easily translate between them in GT6. I used to be a reasonable tuner in GT4 but have just got back into the game after a 10-year break so my skills are virtually back to 2/10.
Thanks,
PF