If I remember correctly the speed limiter is effectively removed when the car is converted from KPH to MPH because the car won't reach those speeds in MPH. It's not really necessary to have aftermarket ones fitted then.
Additionally the UK doesn't have a lot of JDM Fits mostly DC5's, DC2's and EP3's and I imagine there are more options for these cars.
Hopefully someone else can help further.
Will a jazz or 'fit' do more than 112 anyway?
It's just a case of finding which wire is for the speed limiter, and cutting it. That's all, don't let tuners tell you any different.