Yes it can be easily modified to fit but out of the box the cross brace is is shaped for inline use only.
For many the apeal of a new tamiya f1 is a the ability to have a car that is tcs legal and competative with other manufactures. Modifying the car to make it competative with others results in tcs racers continuing to need 2 cars, 1 for tcs and 1 for everything else.