I am not too familiar with the Tremec 5spd conversions at all. I glanced through the paperwork ,but we'll have to look further into it. The trans also makes a little noise in neutral until you step on the clutch. Between that and tge vibration, I was already thinking it might have a bad bearing and/or maybe need clutch adjustment.
The vibration is steady, not cyclic. Like a very deep hum, not like whomp whomp whomp. Hope that helps describe, lol!
