6.0 Injectors

[2003 stroker]

OK I have a 2003 f350 with a 6.0, it has the tipical problem with injectors. Bad cold start loss of power when cold , but when it warm it runs a lot better. So I took to dealer and was told 3 injectors were bad . I thought it would be a good time to update to bigger injectors. So here is the problem the truck has a early engine and some companys say that injectors from 03-07 will work Others say that only 03-early 04 will work. If anyone has info it would be helpfull