I have a sprk plug tune-up kit for an '07 Charger3.5L V6. May fit other 3.5L cars as well. Sold car before I had chance to install. Includes:

6 - NGK #7781 ZFR5LP-13G spark plugs
1 - Standard #V376 PCV valve
1 - Fel-Pro intake plenum gasket

These go for about $45 + shipping at Rock Auto

$35 OBO Shipped