Best Nails to Use to Attach Luan Plywood:
Brad Nails or Finish Nails:
It is best to use brad nails, and fasten the 1/4 luan plywood to the carcass. They use brad nails for attaching the plywood to each other while you then use adhesive glue to secure the hold. It will be the glue that will hold the plywood together for the long term. The nails just hold the plywood together while you glue. The best glue that I can recommend is Titebond II.
How to Use a Finish Nailer or Brad Nailer
How to Use a Nail Gun