Not that I'm questioning your mighty wisdom, but if the servo is all electric, why does it [or mine, rather] have vacuum lines to it? My truck is a '91 F150, it has 1 vacuum line connecting it to the upper manifold, and 1 vacuum line hooks into the top and then leads around to the side/bottom and hooks in there. The only reasonable conclusion I can come to is that they're there to help it operate.

Was that something they changed at some point between those years, to make the 94 and newer servo's all electric?

Party on.