OK..... JAPANESE OCTANE LEVELS DON'T MATTER AS ALL THESE COMPUTERS HAVE OCTANE ADJUSTMENTS, IT'LL ADJUST TO WHATEVER YOU PUT IN IT AS LONG AS YOU RESET THE ECU.
HIGH OCTANE GAS ISN'T ILLEGAL IN ANYWAY, IN FACT YOU BETTER OFF RUNNING 116 OCTANE WHEN GOING THROUGH EMISSIONS RATHER THAN 91 OR 93.
RHD CONVERSION YOU CAN DO AS SAIKOU240 SAID AND CUT OUT THE FIREWALL AND RE-WELD IN THE JDM ONE (AKA THE CAMERON(NIGHT7RACING) CRAPTASTIC METHOD) OR YOU CAN DO LIKE MY FRIENDS AT
WWW.FUELEDPERFORMANCE.COM AND BUILD A NEW FIREWALL AND WELD IT IN PLACE OVER THE OLD WALL AND CUT OUT YOUR HOLES.
SERIOUSLY DON'T GET SNAPPY WITH PEOPLE HERE IF YOU EXPECT HELP.... THERE IS ALOT OF KNOWLEDGE ON THIS BOARD ALONG WITH THE OTHERS AND NO ONE ENJOYS BEING CALLED STUPID.
HAVE FUN AND TAKE LOTS OF PICS NO MATTER WHAT YOU DO.