Newbomb,
Thank you for enlightening me:
My comments were not intended to be misleading, they come from following Larry Shepard's Book. On my budget I follow his recommended cylinder head compression ratio combinations.
Swapping the Speedmaster 2.02 aluminum heads for (New Zealand) EQ 318B 1.92 on my La 360 short block netted me a lower et and better mph with flat top piston combo. The swap included a cam change as well, from the 238/238 108 solid to a 248/256 110 assuming the cylinder pressure went down about 10psi with the EQ's.