Using a D17A1 crank, pistons, and rods in a A6 block will yeild a .045 piston to deck height. This should be the same for the D17 blocks since I compared measurements from the D17A1 block and D16A6 block by measureing the crank journal to the deck height on both. Using the D-series compression calculator and using the piston to deck height of .045, Y8 head gasket thicknedd and 32.8 cc's for the combustion chamber I come up with a -7.05 dish for the pistons to get a 9.5:1 compression ratio like the D17A1 is supposed to have. One more thing. If you use the D17 crank and rods in a D16 block or an A6 block at least then nothing is required for the rods to clear. Now to work on the crank pulley issue....