About a month ago I e-mailed Isthmus to ask if their 12" canopy was a clone of the Airtronics part. He replied that it was developed independently as opposed to being a clone of anything, but thought that it would work very well on the Aquila and Grand Esprit.

I have a Electra-Lite kit (Larry Jolly's Midnight Models) and that canopy blister is also very similar to the Aquila part, so the Isthmus canopy should work there as well.

It's a pretty generic shape and shouldn't be too hard to adapt to a lot of planes.

Regards,
Tim