So I called Mopar performance and these are the numbers I got.
68166434AD BARE BLOCK
68226133AA SHORT BLOCK
These are warranty numbers and they won't release the item without a Vin.
Searched the first number and nothing.
The second is a 6.4 short block for a 2500 truck.
My understanding is its the same block but machined differently.
The short block you can purchase without a Vin.
Matt

Last edited by MattW; 07/16/16 11:25 AM.