The Sanwa GT-Y octagonal restrictor gate is the perfect addition to any fighting game fan's joystick. This gate will give you an improved 8-way feeling.
This GT-Y gate is compatible with the Sanwa JLF series joysticks:
The GT-Y gate is NOT compatible with the Sanwa JLW series joysticks.
the stick rides around that circle restrictor. of course that means Suzo Happ or IL would have to manufacture a square or octagonal gate peice. (or do a top mount sorta like FreedomGundam said but prolly wont be made for the reasons he says).
Closest I found to a 8 way octagonal gate for a Happ/iL joystick is this, a plus shape 4 Way Gate, this is for games like Donkey Kong or Pac-Man that can't deal with diagonals
I've only ever used a square gate on my JLF and decided to give an octagonal gate a shot just to see if I was missing anything, the main thing I was looking to improve was ease of execution of 2xQCF from the player one side as I'd always miss ultras in Street Fighter as I'd hang up on the gate or not reach the final forward. This gate has made a world of difference, not only can I now land my ultras quickly the whole feeling of the gate is just much better overall. I've not found any problems with finding down-back or down-forwards as some people complain about as you can still feel the stick lock into the right position on the gate.
One major thing I'd say to anyone looking to try this gate is to buy a Kowal 1mm oversized actuator with it. After trying this gate with the stock actuator I found the throw distance to be far too large compared to square gate which was a problem for executing dashes. The Kowal 1mm actuator makes this gate just right for me.