NOS NOS is now offering a black version of its popular GM LS-engine wet nitrous system for 90mm or 92mm cable driven throttle bodies. The throttle body injector plate is made from 1/2 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.