Several 4.6 Two-Valve parts were introduced at SEMA by Professional Products, including a Typhoon EFI intake manifold in a polished or satin finish developed in conjunction with Anderson Ford Motorsport (AFM). According to Professional Products, this manifold has been dyno tested to produce more than 20 hp at the rear wheels, compared to a stock manifold at 6,500 rpm. Features include a three-piece design, allowing easy access to the bottom and the middle of the plenum chamber along with the runners for those who want additional porting. The manifold is a bolt-in replacement for '99-'04 engines and uses the stock alternator and other factory engine accessories. It can be used on '96-'98 engines if '99-'04 PI heads are used. Other items for 4.6 Two-Valves are also available, including a fuel rail kit, an upper plenum, polished or satin 70mm and 75mm throttle bodies, and a harmonic balancer. Professional Products, 323/779-2020; www.professional-products.com.