I'm going to use a rotary rasp, then a scotchbrite pads to smooth out the rough cut. Both will be on a die grinder. I'll let you know how it turns out, once I get my Intercooler and crash bar.
I got mine at amazon.com $9.69
http://smile.amazon.com/ToolUSA-Rasp-Disc/dp/B00VUGIZF0/ref=sr_1_1?ie=UTF8&qid=1430855481&sr=8-1&keywords=rasp+disc
I got mine at amazon.com $9.69
http://smile.amazon.com/ToolUSA-Rasp-Disc/dp/B00VUGIZF0/ref=sr_1_1?ie=UTF8&qid=1430855481&sr=8-1&keywords=rasp+disc