I've been considering these too.With my GM transmission and Mopar speedo I'm out about 10MPH.
I emailed them asking if they could match the stock gauges, font, and art work. They replied sure no problem custom work is $10 extra per gauge. Good deal I thought!
I have the standard gauges in a 70 Challenger. I know I'm one of the few that prefer them over the rally gauges...
Bart how do you go about "calibrating" the fuel gauge?