[null and void]

look at the intake: you honestly think an orifice that small is going to receive enough air to force feed a scram jet that small?

Looks a lot like the air intake on an SR-71. The cone may well move in and out to provide air volume control.

The actual missile would have to have a 10 to 12” diameter to contain the fuel, avionics and warhead to even be a threat and not just a technology demonstrator.

A couple hundred pounds moving at Mach 5 doesn't need any explosives. It is the warhead.

[RaceBannon]

The other reason I say it is a ramjet is that it’s based on the existing P-800 Oniks cruise missile design, which can fly at Mach 2.8 and utilizes a scramjet engine. Check out this pic:
http://en.wikipedia.org/wiki/P-800_Oniks.

Hmm......Looks like I picked the wrong day to quit sniffin glue!