I'm not sure I would epoxy it solid. I think mechanical attachment (screws) might be better. That way you can change it out if/when it gets banged up & scratched. Which you know it will from those cement stops in parking lots etc. Kind of a sacrificial piece to protect the rest of the front end. Coming along dandy.
No way to do it without seeing bolts/screws from the top. Being wood with no gel coat on it to crack, it will be fine. If I hit something, it will take a chunk out, not rip it off this way.