Speedometers are about the easiest part of a rod build when you get into them. There are so many options with all the after market items available. I am using the original 1936 speedometer in my coupe and the original housing. The other end is hooked to a 700R4 by way of a Ron Francis speed generator that is powering the 700R4 lockup computer. I took the car to a speedometer specialist that put the rear wheels on a dynometer and turned them at 60mph. He took the speedometer reading (around 80 mph) and cut an adapter gear that fastened into the speed generator and the 36 housing fasten into it. Viola!!! A very accurate cable driven 36 speedometer is on the road again for $80. The truck has a programable electric taking its signals from the same type of pulse generator that is in the coupe. This setup came with a $480 (1990) instrument package that included the speed generator and all the other gages and sensors..