Any pictures of the banks pedal set up in the car? I saw a europa race car years ago and with the top mount they were able to spread apart the pedals more.
Not the best picture but you can see the spacing between the pedals, if you have a hydraulic clutch then the top mount clutch pedal wouldn’t be interfered with by the step at the end of the footwell on your lhd car - as I mentioned in previous post, mine has cable clutch and retains an original style floor mount clutch pedal.