i didnt i just did what they said 500 miles dont take long

 

Yeah, why take a chance. Better break it in for 10,000 miles then right? If it doesn't need to be done, it doesn't need to be done. Simple as that.

 

I have done 10 cycles as of right now. If i approach 60mph I still hear whining creeping in. I am going to do 15 cycles and see where I am at. This car is a summer toy not a daily driver so I do not drive it a lot.

 

I just ordered a 12 bolt from moser for a friends car. On the installation instructions it says to put the car on jack stands, run it forward and reverse for 2-3 minutes to warm up the fluid with little load, then drive 10-15 miles accelerating and decelerating several times.

 

4.10's was a good choice, had 4.11's in my Moser 9in and it was fun, might have been too much for street but I only drove it around for a month before I sold it, I am sure I would have gotten used to it, definitely pulled when I got on it, felt like a completely different car. 3.90's might not have been much different but you went with the right choice. As far as the 10 bolt, if your worried about it, then you shouldnt have gotten gears lol. I tore mine up on stock 3.42's and street tires.

 

I had the same question. Wanted to get 4.10 but was worried about the stock rearend. Guess ill go that route and see how it goes.