Yes, building that 383 back up sounds like a good idea. First decide what you want your final C/Ratio to be, and work from there. For example: If you are using 84 cc heads, .020 head gasket. .017 deck clearance, 3.38 stroke, flat top pistons will get you a C/Ratio of 9.6 to 1. 14 cc domes with 88 cc heads will get you 10.7. Use a C/Ratio calculator, plug in your known numbers, and juggle the other ones to get you where you want to be. You can use a larger chamber head and use the 14cc dome pistons, and still stay below 11 to 1. Or you can cut the domes off, use a smaller chamber head, and go below 10 to 1. The things you can change are: head gasket thickness, piston dome, and head chamber volume. Figure out your build on the computer first, then build the motor. You, (and your motor) will be a lot happier.