Not sure about the V-8 Toro-Flow, but in '66 and '67, the V-6 Toro-Flow got the old style Emblem like the earlier years had. My '67 7500 still had that type of Emblem still on it, even though it got converted to a 6V-53. I tried finding a V-8 Toro-Flow Emblem online, but the closest one I could find was a V-8 Magnum. Interesting though. Check out some of the different Emblems here at Jolly's site:
http://6066gmcguy.com/emblem.html