Here is the e-mail response I recieved back from http://www.autobrakeworks.com/datsun.htm
"
Hi Justin,
Photos attached.
We have changed and improved a few things on the hat. Hats are made smaller and also have taps inserted into the aluminum which is then strengthen with helicoil inserts. So there is no need for nuts to hold on the rotor. Just the bolt.
Another thing.. The caliper you will receive are Wilwood's latest forged Superlites. The one shown are their old Superlite 2a which they don't make anymore.
I can accept paypal,credit card, or money order
Juan Henriquez
910 19th St. #2
Watervliet NY 12189
Paypal or credit card can be done through my website checkout.
Thanks for your interest.
"