sorry, it won't fit the zirolli.

i have one that i will be putting in a meister this winter. after my research i learned that the meister is the best flying in that size range. and there are scale accesories available through meister. i looked into the equinox earlier this year but there were some things about it i didn't like. mainly the fact that its a new bird that doesn't have accesorries for it yet. dino, who owns/sells meister is always quick to respond to e-mails and answer questions. drop him a line if you have questions.
also check r/cscalebuilder.com under the meister section and you can get more info there too.
hope this helps, jeff