I have a Stewart Warner electronic speedo in my hot rod roadster. A positive feature is that it is adjustable for tire sizes and gear ratios. Two negative feature are 1. that the transition from one digit to the next is very jerky, not smooth like the electronic speedo on my Honda car and 2. it picks up an electronic signal from something else in the car for the first few minutes the engine is running when it has not been run for a while and registers speed and distance while the car is standing still.
