Did I mention I have to make it to a cruise in at some point? Google search looks like it's a 69/70 mustang if it's a mustang spoiler
All the ones I'm seeing online seem to be ABS. Do you know a source off the top of your head that might have something else? CJ's pony parts' spoiler is made out of "composite" but I'm betting from the price they mean ABS Thermoplastic polymer is another term I'm seeing thrown around. Sounds like the same thing....
DONT DO IT, abs starts to sag, with no middle support, i got a good aftermarket fibreglass , made in US, for $120