This could be tough, a lot of time went into this and I know I could never get enough to pay for all that time but give it a shot. Remember it is one of a kind and not just a block but a showpiece as well. Before I sell it I am going to put it on my machine for testing. It is a remake of waterblock #1 which performed well before the modifications which include the addition of an accelerator built into the inlet barb to boost pressure, the base was thinned to .070"(1.78mm), 6 depressions were cut into the base .040 deep in the center.
also included in the sale:
thermal grease 10% silver
extra intake barb without accelerator for high output pumps
It will fit : socket's 478,775,754,939,940