The only tricky thing is the 2001 cars...half came with larger fitting, half with the smaller...just look at both hose fittings coming out of plenum towards you...if they are both the same size, then its the earlier model 711... if the one on your right is larger than the left one, you need the 711A...BTW I just got a shipment of the plenums in...same price and service as CR...plus today is my birthday, so I will give free s/h as a present to all who wish me a happy b-day! lol