Transmission Mount Question

If the issue popped up after a street-workout, I think I'd be looking to the engine

You're killing me man!...Why you gotta be a buzz kill LOL. Motor's seems to be running great. I check the flexplate bolts and they're nice and tight. Really feels like a drive line thing. Hoping for the easy fix man....finger and toes crossed. Hopefully I can get it out for a spin before snow flies.