Machaca, Your post was of no use to anyone.
However to add to the pointless posts, with regards to SWA & RYR.
Fact, RYR only have 737NG aircraft and are retiring the oldest airframes, SWA still have B737 classics.
One other pointless fact, an MRO that has FAA approval, does not need to have Mechanics or Inspectors with an FAA licence, thank God.
If you have seen some of the FAA registered aircraft that have gone through overseas MRO's, then you would all change your opinion on how good FAA operators are.