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Will I need a new fuel system?

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Hey people I brand new here, and about 20 years late getting into the ls world.  This is what I got.  2006 silverado ss clone 2wd, 75k miles on it, stock lq9 with long tube headers dual 3 inch into single 4 inch put out the side of the box, muffler cant remember but its 4inch in 4inch out flow through, knn air filter, lowered c notched axle flip, custom traction bar setup, stock diff welded solid with 4:56 gears, running 275 pro tires at the track, built 4l65e trans with a 3000 stall converter in it, its tuned and ran a 13.88 in the 1/4, thinking it's about 400 crank hp,  wanting about 50 more hp from the cam and spraying with a 100 wet shot. So I'm looking for a cam btr or texas speed or ?.  I have a holley nitrous wet kit for it wanting to use the 100hp shot and use about a 228 cam.  What will I need to do for the fuel system.  I'm sure this is out there but any help would be great.  What cam kit? Fuel injectors?  Pump? Rails?  Thanks for any feed back


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