I dropped to a 14 pinion and temps are better.I don't have access to GPS or radar so I couldn't tell top speed but it seemed faster?
I have a 13, I'm trying that one tomorrow and will report back. It's alot more fun when you don't have to watch the temps. I'm glad I didn't get the 7700. I'm going to assume that the 4600 would be the better choice for this vehicle.
skellyo, how are your temps running the sidewinder?