Thomas and Mike,
I was thinking on installing the Aspen Avionics before I made the decision on the Vacuum System, but I call the Aspen people and they told me Aviat was supposed to make a change on the panel to fit the Aspen. I look with the local dealer here and took some measurements and the bottom of the instrument was like only 1/2" from the stick in the FWD left position. I think this is not a problem ( you never push the stick all the way to the left, but it was not legal in the US, and if I want to sell my Husky later on in the US it would be a problem.
Tom it would nice if you can send a picture of your panel, I hope I don't get upset because I didn't install it!
By the way I have in my Husky a Blue Mountain and it works more or less, but the Horizon it is not reliable ( I don't trust it, that's the reason I am installing the Vacuum Instruments).
Saludos
Roberto
TG-DRY