Joined: Nov 2006
Posts: 19,810
Likes: 597
From: NJ, NYC, LI
Bikes: 1940s Fothergill, 1959 Allegro Special, 1963? Claud Butler Olympic Sprint, Lambert 'Clubman', 1974 Fuji "the Ace", 1976 Holdsworth 650b conversion rando bike, 1983 Trek 720 tourer, 1984 Counterpoint Opus II, 1993 Basso Gap, 2010 Downtube 8h, and...
Your best option is probably to find a pair of wheels with a freewheel hub, which should be reasonably cheap since 27" wheels are obsolete, and find an 8 speed hub that matches close enough that you can just switch the hubs using the same spokes.
But one has to ask: why? Is there some reason to prefer 27" wheels where you live? Around here, there is not.
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