Originally Posted by ogreasurada
I think you can file the bottom of the sides of the wide bumper at an angle so when the car turns at extreme angle there is still recess space for the bumper..

Nope!
The wide Mugen bumper has a history, built on the MTX2 and 3 of sagging down under it's own weight. It then gives you the weirdest handling and it drives you nuts when you don't know where it's coming from. Just use the small bumper.