Ric..

I am just starting to install the OS 160 in my DP cub and would like to know how you built the box the engine is bolted to. is it made from plywood, what size plywood, how big is the diameter, and how deep it is from the firewall to the back of the engine. I know it needs to be as deep as to move the engine out so the back plate on the engine is 1/16 in front of the cowl, but just wanted to know how deep your box is. Also did you use 10-32 bolts to bolt the engine to the box. I appreciate your help. thanks

Robert..