Dave,
This is how I'm mounting my Slimline Plate. I had to put the rubber backed brackets on today and send a picture to the Engineer as this was about all he could find wrong last Saturday. No dramas. I was going to mount it like that at any rate. The number plate (COB-600 in Gold Lettering on a Black Background) will only sit slightly higher than the piece of Stainless you see here. The number plate will be sitting up from the bottom of the mount and shouldn't interfere with air flow to the transmission
oil cooler or the radiator at all. Before you say it "THAT IS NOT MY
OIL DROPPINGS!"
Baz