So to clarify... I have listened to the verision on the IV Deluxe Edition which is the "Basic Track.." version. So in this particular version the delay is the same (the same to the elusive track I'm looking for). You can hear that the delay drags out a bit more in this one... However its missing the outro solo. The particular version of the solo starts out the same however it continues off with an alternate riff... Really though the thing to remember is when that song starts out you swore you were listening to the original version... lest scrutinizing ears would really know until the outro solo...
To get really nerdy, the solo starts off with Page doing the riff that climbs the neck that repeats like 3 times. In the normal studio version he comes back to this riff at about 4:30 time mark. In this elusive version the riff he is playing at about the 4:22 mark just continues on with a completely different ending... I can literally hear it in my head... I NEED Help
Oh yea, and it kinda sounds like its mono..??