I would suspect the Tornado association could have plans.. Go to their website.. Email them as Im sure the plans would be on paper (still) and each set would have a license fee.. Hence them not being "freely available" on the website..

My heads up comments:
I recall the earliest wooden Tornados had no bulkhead structure under the main beam.. This meant after a few seasons the main beam and keel started to become one.. So look at the plans and re-engineer if this is the case.. Secondly the original plans also needed engineering in the bow sections. The bows tended to flex quite a lot even with the old rig. I suspect the forces have increased with the new rig. So look at that before building as well..

Now these two areas could well have been sorted on the plans but I dont know..

hope this helps..

Stewart