It's always difficult to tell with these, as they are frequently reproduced on shortened VW Beetle chassis. And why not - they're quite similar under the bathtub body. And with a VW repop, you get most of the experience for a fraction of the cost. And you won't cry as much if somebody dings it up.
This is the part that leads me to believe that it's a real-deal Speedster:
A Karosseriewerk Reutter badge on the front passenger-side fender. They were one of the original Speedster body producers. This company later evolved into automotive seat (and more) supplier Recaro.
Real or repop, I'd happily place this in the garage.