What material is the bumper cover on a 94 Firebird?

[Revver]

The choices are listed below:

ABS Ac r y lonitrile Butadiene Styrene (c r y is spaced out. If not, post gives )
ABC/PC Polymer alloy of above
PA Polyamide (nylon)
PBT Polybutylene Terephtalate (POCAN)
PC Polycarbonate
PE Polyethylene
PP Polypropylene
PP/EPDM Polypropylene/Ethylenediene Rubber
PUR Polyurethane (Not all PUR is weldable)
PVC Polyvinyl Chloride
GRP/SMC Glass Fibre Reinforced Plastic (NOT WELDABLE)

[Rob B (shoebox)]

polyurea for the front

polyurethane for the rear

[Revver]

Why the difference?

[Rob B (shoebox)]

Why the difference?

You'll have to ask GM. I have no clue. That's just what it says in the factory manual.

[sneitzel]

If I were to guess....

Probably a combination of cost vs meeting front and rear impact standards vs how difficult it is to form a front bumper and rear bumper cover

[Revver]

Is the front weldable using a hot air welder & plastic rod method?