318 Build suggestions

Only bore what you need to, to clean up the cylinder. If you can get away with 0.010 then do so. Kb167’s are a zero deck flat top and that will increase your static compression. The thickness and bore of your head gasket and the chamber volume of the head is also a factor and needs to be considered. Kb399 is a domed piston. Both pistons are usually available in the overbore sizes. Rebalancing the crank may be necessary. Depends on the weight difference of the new pistons/pins versus the old. If you’re pulling that motor, put a 2500-2800 stall converter in. That will complement the combo as a whole