Interesting about ESPO. When I built my '63 Savoy wagon, I spec'd new leafs from them on the phone, told them it was a wagon and I wanted +1". After installation the car was barely stock height. If I had to do it again and wanted +1, I'd ask for +2. So maybe someone there looked into it by the time you called, and found that wagon springs were thicker than sedans.
It rode fine but it was a Maxie clone thing and not a cornering build.