I look a bit more closely to the pics above, and something is different on mine. My eat shield is different. Its glued on the wood with epoxy ( covering removed under the eat shield), no screws. The aluminium tape and the engine mount hold it in place. It's also more forward because I considered that it's instaled not tho protect the belly from the exhaust gas but to protect the belly from the heat radiate by the engine itself on ground. All I can say about that is that after a extensive season of flight I don't have any damage due to heat.
I found this pic of my R54 building were you can see the eat shield position
