Best product to repair Renault 5 gt turbo bumper?

[rumpelstiltskin]

I've used ABS plastic strips before with a solder bolt before to repair bumpers.But the little R5 im restoring the bumpers seem to look like a black,sort of fibreglassy stranded plastic?At the broken parts you can see it's sort of fibre strands mixed in with the plastic?,whats the best stuff to repair it?Will fibreglass be ok?Cheers.

[waxaholic]

I would opt for fibre glass in this situation.