True. I also noticed that the tabs are part of the 8.25" measurement and could be trimmed.
I think I'll go with the shorter 50 row (15 3/4" ish) but may keep the other (serpentine) cooler as well.
Besides that, a new radiator is on the way (C&R still has one one the shelf), gutting the thermostat, having the headers coated, sealing the pods so only air going through the radiators can escape, and possibly removing the pod screens. Hope that will keep everything cool enough!