You know something,
I've seen guys run Cylinder Heads with a 5 CC difference on each side of
an RB-Engine, and if it had good stuff {Cam, Pistons, Carb, Intake and Headers}
the Engine still ran great, with no problems.
One bank running 10.0 Compression, and the other at 9.4 Compression.
Nobody cared,,,,,,It's not that big of a deal.