For an air cleaner and pipes the stock main jet should be fine. You'll have to drill out the plug over the idle mixture screw and turn that out to enrichen the bottom end...and I can't remember the part number for the sportster needle part number they recommend or the size washer they recommend to shim it up...but someone here should have that info for you.
Those are the usual mods. You may be able to find those part numbers and a more detailed listing of all the common tech question if you check the FAQ'S in the tech article section.
https://www.directparts.com/techart.html
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