Update:
Sorry for the sideways photo...
I spent the afternoon cutting away the pieces that I thought were holding the Firebird body too high on the chassis. Nothing seemed to work even though the parts I cut would have needed to get trimmed back anyway.
I got inside the car and jumped up and down with my 1/8 ton body weight, but it was solid. Nothing was about to move. Just before running out of time, I stuck my droplight into the end of the driveshaft tunnel and poked my cell phone in to take some pictures where I couldn't see. Sure enough, a pair of brackets that used to hold the console in place in the Prius v were protruding up higher than expected and supporting the Firebrid's body above where it should be. I'm out of time for this weekend, but nect weekend the body will get lifted so that I can cut those brackets off entirely.
Even slow progress is progress.
Bill the Engineer