This may or may not be of interest to you, but I spent a lot of time searching for a suitable electric wiper motor before landing on one that would work. It will require some work, but I feel it is worth it.
I found that the rear 2-speed wiper motor out of a 3rd generation (2010-present) Toyota Sienna is a great candidate.
The wiper relay is built into the unit, which makes the wiring very simple: high speed (brown), low speed (green), washer function (grey), power (blue), ground (white/black).
The shaft turns in the correct direction and the sweep is fitting. I don't recall exactly, but it was a bit over 90 degrees. Alternatively, the Toyota Prius (2010-2015) rear wiper has a sweep of exactly 90 degrees if that is required, however it turns in the opposite direction - this can very simply be reversed by opening it up and clocking the gear 180 degrees out.
You will need to make a custom mount and modify the shaft to suit. The motor comes with a sheet metal bracket that should be trimmed/modified. The motor itself is very small, although it may look large in pictures online due to the factory bracket.
The best part? You can pick one up for $25. Just make sure to ask them to include the plug/harness.
If you ever want to return your car to stock, simply unbolt it and reinstall the vacuum unit.