Wrecker Keys and help

[ecdc]

We, on sort of a whim, bought a 1970 C30 Wrecker and are working through the registration process. Actually we were interested in the winch for projects in building a camp especially raising a wind tower. It also comes with a plow. None of us are truck drivers and so it is an adventure. After were done, we will pass the truck onto someone else.It did not come with any books so any help we can get is welcome. It also came with only one key, and all the copies we have had made (including one by a Chevy dealer) have not worked. Anyone have information as to how to proceed here? How does one find the msrp on the vehicle? (for excise tax). Thank you for your help. The board sounds like fun.