There should be an old thread in the marketplace about them, but essentially its a modified DB2 pump recalibrated for turbo IDI engines. Mel Agne, a member here, sources them through a local Stanadyne Dealer. What exactly he does to them is proprietary but most likely we're looking at adjusting the timing curve to keep EGTs under control and fooling around with the plungers to move LOTS of fuel. Mel started sourcing these in response to the fact that Ken at DPS makes a similar unit however his customer service leaves a lot to be desired, and people loved those pumps but hated having to wait weeks sometimes to get hold of Ken. A hopped up DB2 whether a Moose, A DPS or your own local builder's is for somebody that has a turbo and an EGT and boost gauge and doesn't mind watching gauges. A stock pump can produce damaging EGTs, one of these can blow the heads off or melt the motor together if you aren't careful, but that's the fault of the driver not the product in my view.