The only reason I used the term 'vintage' is that the proposed 'Nats' in 2014 is termed that way. The proposal for that event is a cut off of 1979. This would leave some very nice models out of the equation. I would like it to go to 1986, just prior to the size of models increasing for 4 stroke motors and a 2 metre limit on size.
I would like to consider three 'classes', designs up to 1969, 1979 and 1986, the latter being an early turnaround pattern. Schedules appropriate to all three era's would give those wishing to have their flying abilities tested ample opportunity for this. Those wanting to just fly would still be able to do so.
As far as power is concerned, I would hope that modellers would keep to the spirit of the events and not try and produce over-powered 'bombs'. Electric should not be dismissed, it's the models that are the main point of all this. Six cell set-up's should provide ample power for the model size being contemplated.
As Bob has stated, kits are available but so are plans, in those days, World Champions were only too willing to share their design with the rest of us.
I look forward to hearing feedback from like minded pilots.