It’s internal in the eec. There isn’t a stand alone sensor. Having completely gutted 2 5.0 sn95s last year I can tell you that. Parts houses listing one doesn’t make me believe it actually has one.Better tell all the parts houses. They all list them. It's also shown in the wiring diagram for the 94-95 cars attached. Which appears to have been created by TMOSS...... and I trust him.