I found a nice webpage on GM's site about the 2004 L32's for future swaps.
http://www.fastfieros.com/enginesavailable/L67_new_changed.htm Here is small piece of the whitepaper >
NEW OR CHANGED
3800 Series II Supercharged 3.8L V-6 (L67)2004 Model Year Summary
ˇ New Application in Chevrolet Impala and Monte Carlo
ˇ Powdered Metal Connecting Rods
ˇ Ultra-Fast Oxygen Sensors
ˇ PO4+ Powertrain Control Module
ˇ Direct-Mount Air Conditioning Compressor for Impala and Monte Carlo
ˇ Improved Sealing
ˇ Improved Accessory Belt
ˇ Improved Starter
ˇ 5W-30 Engine Oil
ˇ Changes for Common Assembly with new Series III V-6
Loyde http://www.fastfieros.com
[This message has been edited by FastFieros (edited 08-19-2003).]