there are a few other differences between the UK and JDM engines
this is taken from Blink motorsports webpage
The JDM (Japanese Domestic Market) specification K20A's have an LSD (Limited Slip Differential), a lightened flywheel and closer gearing in 4th, 5th & 6th. They also have an additional 20bhp (when used with 100RON) from a cam, inlet & piston change.
If you could be bothered you could run the engine on optimax (98 Ron) and add an octane booster.
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