Running them in front of the radiator support will cause ground clearance issues. Doing it your way should not.

Doing it your way will present other issues.

1) How are you going to reach your spark plugs? I used those access holes or had to jack up the car and get under it.

2) Will your tires clear the piping when turned? Keep in mind that the tires need room to move vertically when turned. The piping will have to turn sharply upwards and run to the top of the fender and then forward so the tire doesn't make contact.