Some of the footage on Dead Ahead is actually from the show on the 30th, not exactly sure which tracks, To Lay Me Down is definitely from the 30th as they didn't play it on the 31st ... but there is an "expanded version" that has some of the electric material from the 30th included ... Shakedown, Sampson, He's Gone and Truckin.
I saw some of those Radio City shows, what great memories. Garcia was, unfortunately, saddled with the acoustic technology at the time, which was an undersaddle piezo pickup on his Takamine ("fake" Martin) guitar. He had tried his Martin D-18 with a mic, but too much feedback resulted. I think they had a mic on the Takamine as well but most of what you hear is that buzzy piezo sound. Weir played an Ovation Balladeer, but he also tried a small Martin OM guitar with a FRAP pickup (Neil Young's classic tone), but got too much feedback as well.
It would be really interesting to take those raw tracks and remix them, running Garcia's and Weir's raw signals through an Aura preamp, or a Mama Bear, to get that acoustic tone back. It would sound SO much better. Great performances that whole tour on the acoustic sets.