Chris,
First of all WELCOME. We've got a great group in this forum. All terrific people and very knowledgeable. It's rare you can't get exactly what help you need. Mel is an excellent example.
I agree with Mel on his comments but for some reason I was thinking I had seen an S-76 in 72nd scale. Mel, what do you think? I could easily be wrong as I avoid 72nd scale like the plague. Only kits I buy in that scale are helicopters I know to be unlikely to be available in larger scales.
On the 206 ... I've never seen the Long Ranger in a kit.
Sorry but maybe someone else has seen something that will help you.
Good luck,
Paul