Injectors and Chip

Not at all. Buy the combo, you'll be amazed at how your car will drive after the swap.

42 lb'ers are good for stock thru 500 HP engines. Heck, 60 lb'ers would work too, if you think you'll be exceeding 500 HP someday.

HOWEVER.... you'll be needing to update the fuel system too, if you haven't already. A new pump, Hotwire kit, & adjustable fuel pressure regulator is gonna be madatory.
 
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