Well after driving some on brand new tires, the problem has reduced but is not gone yet.
No downpipe on my swaybar, so that is not it. I just pulled the sway bar and changed it to a forged design.

I can see the motor mount on top, next to the radiator on top. It looks good and does not let the engine move much at all on a REV.

I didn't even think about a transmission mount, never had even changed one in all of my years of tinkering. I will look around for it and see if it's toast!

In the meantime I bought a locking gas cap and a spare blower motor, just in case that noise I am hearing coming from the blower turns out not to be a some leaves grinding against the blower cage.