Land motor vehicle engine parts, namely throttle body injection and multi-port injection intakes, manifolds and parts, throttle air bypass valves, throttle body injection fuel connectors, connecting lines, connectors, clamps, hoses, exhaust headersand pipes, and nitrous oxide systems comprised of nitrous bottle, nitrous and fuel solenoids, injector plates, filters, fittings, switches, braided hose, and all other necessary hardware for a complete systems