I am not sure why this question was asked, but if you intend to do a production that is meant to be listened to specifically with headphones, there is an option on which I would like to write a general note.
You can record your stuff with a binaural microphone system (you don't have to get your hands on an artificial head, I got astonishing results when recording in the field with just a pair of headphones on my own head with a pair of DPA 4061 microphones glued onto the shells, I didn't care about front-rear distinction though.)
If you happen to have a recording already done with intensity-based stereo that sounds good on a pair of studio loudspeakers, try applying the HRTFs manually to your signal. One plug-in that does this that impressed me very much is the Wave Arts Panorama Plugin which has several HRTFs on board for different artificial heads, and even a few of real heads, and it allows you to pan the sound around your entire head, as if it was surround. The surround effect is generated by filtering the signals so that your brain thinks the filtering was done by your earshells, because the sound is coming from behind.
A general note for everybody who intends to use this technique for artificial surround: remember that ears are different. All people are expecting different filtering effects that matches their earshells. Therefore, a HRTF that works perfectly on your head might just not be the best one on other's heads. Keep this in mind while mixing, and ask multiple people to listen to your stereo/artificial surround image.