I'm looking into replacing the pump and injectors on my '83 K2500, which is basically bone stock except the previous owner replaced the pump sometime in the past with a used unit with unknown mileage. We have an injector shop here in town, but it was recently bought out and I haven't heard good things since. Does anyone know of any good Stanadyne shops in the Central/Northern California area? I'm willing to order the parts from out of state too from a good shop. Has anyone used US Diesel Parts (Gomer's) or Oregon Fuel Injection? I see that US Diesel Parts uses a steel sleeve in the advance bore of their rebuilds to help with the wear.

Also, in regard to injectors, some say to just go with new Delphi units. I see that US Diesel Parts has new OEM Bosch units and other shops rebuild them. Any thoughts on the Delphi/Bosch/rebuild comparison?

Thanks a lot.