The CP Pistons Bullet Race piston set for BBC applications lists a 4.500" bore, 4.500" stroke and 6.700" rod length, supplied as a matched set of eight. This Bullet Race option provides the specific bore, stroke and rod dimensions for large-displacement Chevy big-block builds where those exact measurements are required.
CP Piston BRS BBC 4.500 Bore 4.500 Stroke 6.700 Rod Set Of 8 (MTO Non-Cancel)