I don't know anyone in London with the OBDII. I have an OBDI though not that that helps you. As for the instrument cluster. I assume you have a line on one @ Corey's or Shaw or something. Make sure you get a cluster off a 4 cyl car preferrably same model year. The wiring is already there IIRC. Also third is good for 137kph in my 96 4cyl but only 132kph in the 95 V6. Hope that helps.

Green 96 mystique gs 4cyl mtx 16.9 in the 1/4 mile @102500 miles 95SE in Midnight Red MTX MSDS headers and y-pipe SVT exhaust SVT UIM Optimized se TB. Full pre 98 SVT body kit 15.741 @ 87.73mph :)