prusa mk2s fan nozzle

While trying to figure out what to do to improve cooling to possibly prevent overhangs from curling up and knocking over small parts of a difficult model I found this thing: https://www.thingiverse.com/thing:2276997 which supposedly improves cooling by blowing from two sides instead of only from the front.

It didn't however quite fit since I have a (homemade) silicone sock on the hot end, so I need more clearance between the nozzles and the hot end. The other dimensions also seemed to be a b