Hello all, new here but not new to the fe motors.  I do have a piston question. I have a set of 390 dome pistons with a 1760p stamped in the top I have been unable to find any specs on them not even sure what brand they are.  Didn't know if anyone has come across these before I have had them for years and finally might be using them but trying to determine what my compression ratio will be.  Thanks for any help.