While C&L's intake plenum isn't designed to be a dress-up item, its functional form looks more natural than the hard-edged stock plenum box. What the 4.6 GT engine needs is a good $100 bolt-on ...

Wayne says the plenum installation can be done with the hood on the car but it's easier with the hood removed and lying upside-down on a workbench.

The plenum rating ensures that Chief’s pre-install boxes have passed UL standards for safety. Chief’s PAC510, PAC515 and PAC520 Pre-Installation Box Accessories organize cables and electrical ...