It's coming around quick.
I have the same dilemma. I think I'm stupid to change anything but I think I might be able to squeeze a handful of hundredths more.
Isn't that the real issue? I need a dyno in the barn.
I Dynoed this one with the 13.5's in it. 585 at the crank. Lean and mean.
Same engine I just took 2.3 points of compression out of it. Maybe a shade more with the head gaskets.
I figure I lost maybe 45/50 horse. That seems "Streetable.....