Since there is no shop locally that does this kind of job, im going to have to use the crankshaft i got and take a chance. Yes it is a stock built maybe with some acl bearings too. Although, someone ,that saw the pic of the 2 cranks, told me that the crank i got has been 'tampered' with therefore it might be for lighter pistons.. im in the process of searching for a crankshaft that has not been 'tampered' with. if i didnt get lucky(most likely), ima have to put some acls maybe just maybe they would help with the issue.