Not sure really, We got the hulls and mast cheap so we were well in front from the start.
Really the only change was a pair of alloy beams and tramp to suit the new width.
Then a set of sails and associated spi pole gear etc.
For me its just a bit of fun, not to be taken too seriously. Not like its an F16 now is it <img src="http://www.catsailor.com/forums/images/graemlins/smile.gif" alt="" />