Explorer upper....but what lower to use???

[84LX89GT]

I got a 5.0L explorer upper intake manifold, but i've been looking and don't know what lower to get for this. I've heard that it is a mixed design between the GT40 and Cobra and the cobra lower LOOKS like it may fit, but i really have no idea. I've heard that the explorer lower intake manifolds don't have a certain sensor so i'd have to mess with the manifold to make it work on my GT. Can anyone PLEASE help me by clalifying what i'd need to put this on my car, and i'd also be very greatful if anyone could give me more info about these intakes in general. Thanks,

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previous name: 84stangLX
'84 Mustang 5.0 LX
my LX
'89 Mustang GT
my GT