The L32 is a supercharged Series III. Introduced in 2004, the main differences between the L67 and the L32 is the L32'* electronic throttle control, slightly improved cylinder head design, and updated Eaton supercharger, the Generation 5 M90. HP output is up to 260 hp in the Grand Prix GTP, although excessive torque management in the PCM results in the 2004+ being no faster than the 1997-2003 Grand Prix GTP in stock form.
also an interesting tidbit concerning the Series II and III NAed:
The Series III motors include many changes. The intake manifold is all-aluminum on the naturally aspirated models. Electronic throttle control is added, as is returnless fuel injection. Stronger, powdered metal connecting rods are used (2004 only), instead of the cast iron style from Series II engines. Emissions are also reduced.
2000 Oldsmobile Intrigue 3.5L DOHC V6 15x,xxx miles "The Forgotten W-Body"
shaved badges, Eclipse HU, Pioneer TS-A1370R'*, Pioneer TS-A6971R'*, 20% tint, cleared corners, Silverstar Hi'*, 9005 Low'*
Fenderwell Intake, Hi-Flow Cat, U-bend delete, GMPP Handling Kit, MOOG endlinks, and 12-inch front rotors
1996 Bonneville SE RIP 157,751 miles, totaled 8/29/05