Did i damage my 727

Don't know for sure but IIRC the parking pawl is designed to NOT engage at any real speed. It doesn't have time to fall into position but will make one hell of a rattle.
Good information so I might be alright then but we'll see it's just really weird what caused the vibration and how it came and went away. Almost felt like something out of balance or tire maybe was hitting something? Hmm I just need to look and diagnose once I get home. One thing I hate is the headers are really close to the torsion bars as well but that's another issue