with your bore and head setup:

jdm itr pistons(p73-00) would yeild ~11.3:1 comp
USDM itr pistons(p73-A0) would yeild ~10.8:1 comp
jdm b16a pistons(p30) would yeild ~11.5 comp
USDM b16a pistons(pr3) would yeild ~11.3:1 comp

for N/A I would use p30's with a .010" milled b16a head for ~11.8:1 comp. you could mill the head a little more(-.0050" for a total of .015") to make 12:1 comp. I hope this helps...