Today, I made an appointment with Arizona Differential Specialists to switch the rear end ring and pinion back to the 4.86 that the car came with when I bought it.  I am to show up at 8:30 am at their shop with the car and ring and pinion and they will be done with the swap by noon.  I can’t wait to see how the car performs with its original gear back in.  I’m thinking of doing some test and tune before ADRA race number 3.