Frame cut bumper: Cut-off wheel or Sawzall?

[The Car Stereo Company]

his best bet is a cordless dremel with the 2 inch disc. most accurate cuts that way

 

[Gorzz]

Wheel, all the way. Specific metal wheel wil be not only accurate but save time. Had both horns cut off in less than 20min, finished off with a bit of filling. Perfecto!