i have a 98 expo 4.6 and i just bought an air intake kit from ebay and i'm lost on how to install it .To install the air intake do i use any part of factory parts, because i notice on the factory intake i see two ports that wires goes into. One seem like a sensor and the other seems like a vacuum line. On the the after market intake i don't see any ports to plugs these things into, unless it requires modification, i can be wrong i am a rookie.