whats involved in recalibrating the 85 speedo to 140...cause not sure if this would work but could i recalibrate and then throw a set of 140 white face guages on it over the 85....????
It has to be done by a shop, it involves different springs etc...
But yes you could put the 140 face on send the speedo out and when you get it back it will be fine.
I hear Brothers Performance can do a 85-140, or I know North Hollywood Speedometer can do it as well, they did all the Saleen stuff and did my 200mph face.