Stay away from Gem State by costco. I heard a couple horror stories about some idi stuff the worked on. When I had my IDI I did some searching on oilburners and they led me to this place
Oregon Fuel Injection, diesel injector pump, injector, Powerstroke injectors, turbo and turbo parts for Ford Diesel pickups 6.9 l, 7.3 L, 6.0 L & 6.4 L Everyone had good things to say about them. Got rid of the IDI so I never bought anything from them though.