A Trac 14 and a Windrush 14 are the same boats,
Trac's in the U.S. & Windrush in Australia, where their still being built.

Try
http://www.wevo.com/YACHT.htm
or
http://www.wevo.com/parts.htm

Then look up the Class association page for rigging and tuning tips [see attachment]

http://members.ozemail.com.au/~pbmcc/

and you should get all the info you need