stainless steel?

if its like every other bumper ive seen on a truck its steel thats chrome plated...sadly theres not much you can do to fix the scratches (besides dishing out big buucks to have it rechromed.) you can pop the dents out the best you can and it will look ok....after all its a truck and you will back into something at one point or another
try to find another truck that doesnt have a ding in the rear bumper....(not easy)
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Soon to be gear: Amp: Alpine MRP 450 MONO
Subs Two Pioneer TS-W307D2/D4----12"
Box 1 cu ft/chamber sealed
Deck pionner DEH P6800
Front spks 5.25 kenwoods
Rear spks 6x9 pioneer 3 ways
caps Raptor 1 farad
Wiring Streetwires 4 gauge wiring kit
Battery Interstate
Alarm viper 2 way
some mismatched brands but lots of good gear coming together