Todd, I think all the 69 novas had 840 heads, and 163 intakes whereas the 70 was a "new" 396/402 with small plug heads, and the low rise aluminum intake.
I can't remember any cases of carryover as this was a 402 in 70 although it was still called a 396.
How about some deuce pictures? And we'd sure like to hear about it.