So you went with the dished pistons then? You need to tell your builder to make sure the deck height is correct for them if he hasnt talked about it. Also, i get 9.7:1 static if they are .010 down from the deck. Most less expensive aftermarket rods are .008 shorter so the pistons are down in the bore even if he set the deck at blueprint height. Like CP if I were building it, I would be lowering the chamber size down to 80ccs and I like to bring the piston proud of (above) the deck by .010 to get a tight quench. This yields 10.5:1 on 4.15, and 10.8:1 on 4.25 strokes while running the dished piston. Also make sure he's using the Felpro performance head gaskets. They have a pre-flattened fire ring so the aluminum head doesnt get messed up and the gasket fail over time. You have power brakes, so I woiuld keep the cam size conservative, and look for a carb at least 870cfm wet flowed (950cfm or better dry) and a convertor in the 2400 brake and 2800 flash stall. If you put slicks on it at some point, that engine should be capable of running low 12s without sweating. Maybe faster depending.
