1968 383 piston replacement

Thanks guys i will for the info from the machine shop.

Well the machine shop got back to me and said to be safe the need to bore the bores to 0.30. the car will be street driven and remain as stock as possable. Is the KB 162 my best bet. I would prefer to not deck the block or shave the heads, will i notice a difference in performance due to these pistons resulting in a lower comp ratio? Thanks