I agree with those points but 170hp at elevation will jump up pretty quick compared to the 135hp the xm has at 6000ft
Correct... That sled will work! I could also buy an xm and throw a turbo on it for the same price if that's what I was into. Turbos are turbos. Your viper won't COME with a turbo just like the xm wouldn't. You have to get them both installed! And you have to pay for it too