Reputable source for new 4D55 injectors?

I need to replace my fuel injectors, which have been steadily leaking during operation and are probably costing me performance and miles per gallon.

I have found a few salvage yards on car-part.com which sell them, but I was curious if anybody had a good recommendation for an after-market or properly refurbished set of injectors for a 4D55?

QCH Heads on ebay says they will sell you new injectors with their heads so they are sourcing them from somewhere brand new. I would look at them and see if they will sell just the injectors by themselves.

Jeff

found this http://www.mightyram50.net/vbulletin/showthread.php/3547-4D55-diesel-injectors