Just in case whoever get the Fuji is curious and doesn't feel like getting out their calipers, the seatpost I took out of my gran touring se that appeared to be the same year (but a mixte as I mentioned earlier) was a 25.8. I might still have the cranks with Fuji forged into them (cool looking but big ring pressfit on to crankset, so not high quality and missing two of the bolts) somewhere as well as the old seatpost (was one of those cheap posts with a separate clamp unit) if you really felt the need to build it up to original spec.
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Bikes: 1996 Eddy Merckx Titanium EX, 1989/90 Colnago Super(issimo?) Piu(?), 1990 Concorde Aquila(hit by car while riding), others in build queue "when I get the time"