i was looking at buying gauges from speedhut and i noticed that they offered uk spec gauges but they were in mph. I was wondering what it would take for a us spec celica to accept an UK spec gauge. Any information on this topic would be appreciated or some other places to get gauges at too thanks.

Which gauges are you talking about? The main gauges? (Tach, Speed, etc.?) It would probably require a recalibration.

the UK-spec celica has the 3S-GE engine, which has a different redline and probably a higher top speed, so it wouldn't make sense to throw those covers on ...