SpitfireAce.......1/8 inch plywood would not be enough unless you glue several peices togeter. I would guess the thickness from front to
back is a piece I built, about and inch thick, and tapered up along the fuse. I'm sorry its not right in front of me, but doing it this way it is
a little bit thicker than the thickness of the landing gear. This way I have plenty of hardwood to screw the landing gear into. I prob should
have drilled up through it and used plastic screws just in case, so the plastic screws would just break in the event of a harsh landing.....but
trust me.....installing them where I did, this thing lands like a piece of cake . If you look at the photo again, you will see which bulkhead I
glued up against and then also I run some pieces up towards the front along the side of the fuse to the next bulkhead forward, just to give
it a little more strength. Trust me....if this thing ever breaks.....its going to take the fuse with it, thats why it might be smarter to use
plastic screws so they might break (only) and not damage the rest of the set up.

Hope this helps