Sounds like 126mm
If your friend ends up building, and doesn't want to spend much, how about 36h sjs track hubs (fixed/free, cutouts for classic looks, good bang for buck, can be spaced for 126) laced onto shiny box-section NOS weinmanns from freshtripe (I'm assuming the bike's a 27''er not 700c). Get them laced up all funny by dogsballs, for the price of an orange juice I believe he charges ;)
Sounds like 126mm
If your friend ends up building, and doesn't want to spend much, how about 36h sjs track hubs (fixed/free, cutouts for classic looks, good bang for buck, can be spaced for 126) laced onto shiny box-section NOS weinmanns from freshtripe (I'm assuming the bike's a 27''er not 700c). Get them laced up all funny by dogsballs, for the price of an orange juice I believe he charges ;)
my twopenn'orth