C&L MAF and Inlet Pipe Assembly for 1989-1993 Mustang 5.0 and Mustang 5.0 Cobra. Dyno developed to maximize the performance on naturally aspirated 5.0L Mustang applications and 50 STATE LEGAL. The C&L inlet pipe come with a boss which can be drilled and tapped for use with a nitrous system. This system is designed to be used with the factory air box assembly. If you use a conical style filter with this system, the MAF transfer function will be leaner than with a high flow filter in the factory airbox. (C.A.R.B. EO# D-640)