[patrickt]

It's been a while since I analyzed the costs for ERA options for somebody but, as I recall, the cost of the ERA rear was almost a no-brainer for what you get versus what it cost over and above a Jag based rear. Now, what I can't remember is whether the outboard based brakes then triggered the need to upgrade the front wheels to the "big brake" option. I did all that but I can't remember whether you have to or not.

EDIT -- And I can't remember whether some of the nuances on the six pin hubs plays in to that either. But I can tell you that the six pins are one of the coolest things on the car that only you will appreciate, because no one else knows you have it except you.