Ok people bear with me, I know all these questions have been answered before but I'd like to get a fresh start so i can ask my specific questions. I am brand new at this and just ordered my harness from wiring specialties about an hour ago. I will be running a vortec 5.3 in my 2001 330i.

My questions: What cooling system ( fans, rads, etc.) do you guys recommend. ( preferably on the lower side of the money spectrum?)
Do y'all run oil coolers and trans coolers? if so what brand?
What fuel system do ( Injectors, pumps, rails, etc.) do you guys recommend for fingers crossed 400ish horsepower with a stage 2 sloppy cam and LS1 intake?
What are some cheap headers I can get to use as a base of design for my own?
What heads do y'all suggest running? Stock Heads or what? Are aftermarket heads even necessary? Again not the biggest budget but not afraid to save up for good things.


Thank you guys, any help would be much appreciated. Again I know so many of these have probably been answered but would be so much more helpful to have them all in one place.