This throttle body with spacer is your best choice when you do not want to port your stock intake manifold or do not use bigger aftermarket intake manifold.
Fitment:
For 2003-2012 Chrysler 300C 5.7 or 6.4 HEMI V8
For 2003-2012 Dodge Charger 5.7 or 6.4 HEMI V8
For 2003-2012 Dodge Challenger 5.7 or 6.4 HEMI V8
For 2003-2012 Dodge Ram Hemi 5.7 or 6.4 HEMI V8
For 2003-2012 Jeep Grand Cherokee SRT8 6.4 HEMI