336 speedometer drive solutions?

[BERNIEHUMBER]

HI:
The background info is back at the college so when I am back for the Christmas party I look it up on my library as long as they haven't wiped it in the cloud.
I remembering the sales guy coming around with a sample of "special" PLA at the time and said "try this" after I explained the app.
If this ever goes I will put in a GPS.