HELP!! jdm clocks in a uk car
 

my car is a uk my00 i have just got some v5-v6 jdm clocks (from an ra i think)
how do i go about making the kph read mph on the speedo
have looked at the convertors on ebay and they are for jdm cars running in kph and copnverting it to mph
as mine is already running in mph i just need to get the speedo working in mph


help please

cheers phil