1996 volvo penta 5.0gipbycce. Looking at replacing one or possibly both injectors. I can't find a part number. I'm getting conflicting information as to what the lb/he rating is supposed to be. I thought there were 90s in there but that doesn't seem to make much sense since the high pressure pump only puts out 30 psi. Someone told me that it was 10 percent of the horsepower. That would be about 45-50 lb/he per injector. I would like to replace with what is in there. So how do i find out what is in there or origional? Thanks in advance.