Here is a link from the DTR. After the first page or so it gets into a good discussion about the HPCR and EDM injectors. There is a claim of 708hp with twins, edm's, TST, pressure box. All done with the stock pump and rail. Thought some of you would like to see it.
http://www.dieseltruckresource.com/dev/showthread.php?s=&threadid=56573
http://www.dieseltruckresource.com/dev/showthread.php?s=&threadid=56573