Cut it with an acetalyne torch, heat the plating up at low heat to bend it, and make sure to be a little sloppy with the cut on the outside of the mat so you have rounded edges instead of sharp ones. Sand and buff the edges to remove the riff raff, and you're good. My buddy works with the stuff all the time. Get the thick stuff, and just remember heat is your friend along with wood angle framing to pound the bend in nice with a 5lb sledge and board. 
I think, I tinker, I play around, I build.
'99 Contour
W Ztc, ATX, HID Fog, mesh, A6, B LED, Big 3, Alpine cda-9827, Memphis lvs12 1200w, Alpine 1241, 4xInf K 6x8, Xfire 400/4, 7.2 LCD, glv box "xbox jack" mod, interior horn alarm mod
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Have to get you back. 