John,
See Ty's post on the Profile Caviler that Tom Morris had at the GA meet. Good pictures of how its installed. The mount is for a front mount system. It is a 3/16" plywood circle that is milled out for motor cooling, drilled for motor bolts and screwed to the mount crutch. It can be used in full fuse or profile ships. The mount is very strong and does not require an external rear bearing for solid motor support (once the nose is shaped and all is final fit I CA the whole ring to harden it). Its a very good product.
Best, DennisT