Thank you for the details. However, bro I have made the "engine skid sheet" from an old computer CPU's side cover i.e. in black color and the hole design is different from yours. Soon post the pics of whole DIY with complete specs. I have tried to cover the necessary things which don't need the Air e.g. the centre main pipe which is holding the engine.
Now my question regarding safe guard is still waiting for answer. I repeat the question:
Fitting ? e.t.c