NOS NOS is now offering a black version of its popular GM LS-engine wet nitrous system for 102mm or 105mm drive-by-wire throttle bodies. The throttle body injector plate is made from ½ inch thick billet 6061-T6 aluminum then anodized black for great looks under the hood. This system includes a pair of black top solenoids, black 10-lb. bottle, along with mounting hardware and instructions.