I thought we were street legal but the Illinois Secretary of State's Office changed their mind. Because the car has no body, I had to start the process all over again. The result was delay after delay but an Officer of the IL SOS Police Department affixed an official VIN tag to the car today and I truly think the title and license process is done. HOORAY!
In the meantime the intermittent speedo reading issue was fixed by simply reducing the gap from the magnets rotating with the wheel hub to the proximity sensor mounted on the spindle. KOSO recommended "a maximum of 8 MM" clearance. I had set clearance to about 6 MM. Reducing it to about 3 MM has fully resolved this issue.
I have also purchased and installed a MoTeC SDL3 data logging digital dashboard. Great product with great support. More on this to come.
Now that we can finally drive and enjoy the car on the street, we plan to do this a lot before we run out of nice weather. BTW it was 96*F in Chicagoland today and the D2's dual radiators kept the engine cool. Engine temp is controlled by the LS7's thermostat at a minimum of 195*. A couple of times when stopped in traffic coolant temp got to 203* and the engine control computer turned the fans on. The temp quickly came back to 199* and the fans turned back off. It is great when things work as designed :).