Good point made by Kabal.
I had the same dilemma. The strutbrace i have was meant for the 135. Still waiting for a brace for the 335. And to clear the brace over the stock airbox i had to make use of a double bolt set up. This works fine but reduces the front "grip & brace" in cornering.
When i remove the stock airbox and fit the brace without the double bolt the front "bracing" is amazing...the car goes right where you point it...the front wheels feel direct, strong and secure...:thumbsup: