contact NLM or Precision Turbo and see if they'll supply you with the data you need. Not all 42lb injectors are created equally, some are pintle, some are disk some have short coils, some have long coils... the specific data you need for these is really important. Also, he will need to know the flow rating is at 3 bar fuel pressure. If the injectors are reboxed Ford Motorsport injectors then he may already have the injector data.