Hi, I have 1998/99 era Specialized M2 in Mango. It's 15.5" but feels slightly bigger (length wise) than the Kona from 99 I had previously. Check my listing. Lots of other parts for sale too.
My frame has a 20.5" top tube.
http://cgi.ebay.co.uk/ws/eBayISAPI.dll? ... K:MEUSX:IT
A bit like JMC's front Dirt. They are a tight 32" as in they are meant to be worn on the waist, not hips.
5 GBP