The Volvo radiator is wider. . .which meant it didn't fit inside the grill shell, if it weren't shrouded that wouldn't have mattered, but with the shroud it pushed the electric fans far enough back I wasn't 100% sure they would clear the crank pulley studs. If I removed the pulley and installed shorter studs (since the mechanical fan isn't there anymore) then I could probably mount the fans as pushers behind the radiator.
You can see how I mounted the Volvo shroud in my build thread (link in sig). The 8th post shows it.