My engine numbers in my Chrysler book for the 1930 Model '66' start at C1 001 and end at C2 8055, so it looks like yer good to go. I see no designations that start with "CC". The next series of "C2" engines is an 8 cylinder in the 1935 Chrysler which go from C2-1001 and end at C2-3632, I believe.