Yes .08cc is a .049 cu in, and 1.0cc is .06 cu in. The PY is Russian for cubic centimeters.
I would suggest just going to the NV Engines website and check out the instructions and tips in their support section (upper right hand corner).
They still sell the same engines under the NV Engines brand now instead of under the Norvel brand.
http://www.nvengines.com/