On the Maui Speedster I looked at the inner fender well to see if it was there….looked legit, but I’m not familiar with what IM does. As mentioned, the horns behind the grills are usually a tell tale sign, although the Maui speedster photo is dark.
A few years back, I know a group of us all splurged on “real” wiper blades to rid ourselves of the VW blades. I positioned mine at the base of the windscreen, although most original speedsters seem to have them angled on the windscreen like the Maui Speedster.
Pre-A and A’s seem to look close until parked next to one another. I had mine parked in between a Pre-A and an original A. It was very apparent the differences between the Pre-A and A, just from the front (bumper position, horn grill location, and the way the Pre-A body rolls under the car to name a few).