that centric is avail everywhere for $40. and i'm not so sure that 1 1/6 bore vs the 1 1/32 bore is even an actual difference. .03125?....that may even be the Od of the piston, vs the ID of the cylinder difference. wilwood even refers to it as a "chrysler type" fyi the centric is also cast aluminum. the wilwood may be polished a little prettier, but i'm fine with "as cast" for a savings of $70