Well plans have somewhat changed, and for the better. It would appear (after talkging to IFG) that my boat is like a 70-71 but has the more modern mast and rigging (woot!)

The hulls are worse than we thought, we got inside one of them and the deck (while solid) is somewhat unrepairable. I've spoken with IFG and they have a set of brand new 1989 hulls sitting up at the shop, as long as the price is within our reaach I am just going to buy them and swap everything else that I have over.

Stay tuned.