[65Okasai]

I have Dakota Digital VHX gauges on my truck. If you take a look at the pics below, on the NP208 I circled where the original speedocable went. Well Dakota makes a sensor, part # "SEN-01-128 128k GM-style High Frequency Pulse Generator", that will screw right on. Once you plug this on, you just program the gauges. For the ECU, 4x4 4L80Es have a ISS and a VSS. They are both before the adapter for the transfer case. See the random pic I found on-line. I converted my 4l60E to accept the 4L80E jumper harness. It really was pretty easy. Hope this helps, sorry for it being dirty, this was for mockup.