Does my 87 300E have a Mass Airflow Sensor? If so, where is it located and what does it look like?

Regarding K&N:
Did anyone mention gas mileage?
I have been using K&N air filters for years and always notice an increase in MPG.
The larger the engines displacement, the bigger the MPG gain. 6mpg difference in my full size pickup and 3 in my 300E.

Angel