Originally Posted by jorb
Is there a vehicle id plate on the truck?
If you have the stamped number on the plate or on the title you can enter in The VIN Buster
It should give you the series info.

Been to vin buster before and it does not say which 6400 it is.

It can be a 6402, 6403, 6408, 6409, 6412, 6418, 6419, 6422, 6429, 6432