as i said a bit earlier, would be squishy getting pipe to that grill there, but not to say it cant be done, you could jimmy up some thin rectangular pipe or very flat oval like you said
if you do go that route, make sure you dont have the pipe going over the exhaust mani/extractors as heat rising from there will be VERY hot, so make a bend to avoid that area, and where it passes by the radiator and exhaust maybe heat wrap it for best protection ,if you really worried about that, its not absolutly neccessary, it probably will help the longjevity of the intake piping and silicone bends tho
if you do go that route, make sure you dont have the pipe going over the exhaust mani/extractors as heat rising from there will be VERY hot, so make a bend to avoid that area, and where it passes by the radiator and exhaust maybe heat wrap it for best protection ,if you really worried about that, its not absolutly neccessary, it probably will help the longjevity of the intake piping and silicone bends tho