Fibonachu, I purchased the VHX-47C-PU-S-W model.
I corresponded with Dakota before deciding and their response was both timely and informative.
Bill, I believe that your description of the calibration methodology is what I can expect. In my case the transmission (NV3500) has a VSS signal output that sends the pulse signal to the Dakota interface, not teribly different than the way the signal was originally used by the truck computer to provide speedometer inout on the donor truck the transmission came from.
Once I get the set I can provide some more hands on information regarding what is involved in mounting and calibrating the system (although my actual calibration will not take place until the truck is road worthy).
