you can run them with stock oil, but you wont be able to turn it up all the way because it wont keep up. as for nozzles The way I understand it the 530 ones are close and you can get by with them but they arn't ideal, powrstroke nozzle would be alot better.
you buddy may wont to chek into a set of good hybrid injectors, they have the 530 fuel side with the powerstroke oil side and nozzles. so he can run a stock oil pump.
with any injector he will need custom tuneing from some one like swamps, tony wildman, dp tuner, gear head automotive, diesel innovations, and several others.........