on a Nova can anyone tell me which numbers in the Vin tell the year?

Shoot and I can try!

Otherwise it is the first number for 62-64 Nova's 2=62, 3=63, and 4=64.

For 65 to 79 nova's it is the sixth digit. You have to pay attention to what generation of Nova you are talking about due to the over lap. If the sixth digit is an 8 it could be a 3rd gen 68 or a 4th gen 78! What gen are you talking about.