I built a version similar to the T-Rex style using 2mm alloy brackets & 2mm alloy plate. A few rough crossings of some lumps bent the whole plate & brackets. The T-Rex plate uses the stock steel brackets that locate the plastic side covers. These brackets are attached to alloy stubs on the sump of the engine, they are NOT designed to take impacts. The T-Rex steel brackets & more solid plate than mine will overload the mounts if it takes a half reasonable hit.
That’s why I went with the Ricichet plate, more solid, proper locating hardware & far better protection.