Hi Guy's
I've taken the bumpers off of my '86 spider Veloce. The car is off at the body shop being resprayed at the moment.
I'd like to clean up the bumpers before I put them back on.
Has anybody got any advice?
Can I simply sand down the existing silvery/grey finish.. fill any dings 'n dangs with body filler, prime and top coat?
Do I need any special paint? I'm not too sure what the bumpers are made of they feel like metal but they could be plastic
Any help appreciated
TIA

JaB