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650+ 7.3L Combinations Here is a list of parts needed to get 650+ rear wheel HP combo out your 7.3L. This is assuming you have the standard stuff like, Gauges, exhaust, and intake. 350/200 Hybrid injectors HereCompetition fuel system HereCompetition Valve springs HereSmith Brothers Pushrods HereHead Studs HereFull Force dual HPOP pumps HereCustom tuned chip Here or Hydra Here or just tunes if you already have a chip HereUpgraded IDM Here Turbo size recommendations: T4Continue reading