Hi, thanks every body for the input, I guess I was gunshy do to the fact of reading all the blogs about flywheels, I will definitely try the shim method, at this point it be a while before I can do any thing, need to finish strip down engine block and have it hot tanked and then start looking for sand, one minor up date received my costume gib keys so soon I have the crank back in I can go to work on the flywheels. Thanks again for all the help and will post up date when block is done. Tony.