With the particular set-up that you want to do you C/R is going to be close to 13.5:1 and thats with no milling, no decking, and using a oem 3layer headgasket. Jdm ITR pistons are the way to go if you are going to use a honda piston! in your set up with jdm itr's you can get 11.5:1 -11.8:1 with no decking, no milling, and an oem headgasket and 12.1:1 - 12.3:1 just by using a b series 2 layer headgasket and be a lot safer and cheaper than using the CTR's!