Another thing, what is the difference between the RU-3530 and the RU-1785? Specifically, the length and width...etc.

I need to replace my KKM as it's nearly 4 years old now and the metal screen has broken in various areas on it.

2000 WS6 Convertible A4 13.11 @ 107.5 with a lid, Ram Air and LTs Gone:95 Mystique LS Young America edition V6, MTX 15.6 @ 91