Wanted : 273 4bbl Heads (near DC?)

When looking for aftermarket intake manifolds for Small Block Mopars, I found several that said they would fit "all 318, 340 and 360, as well as 4 barrel 273". In researching why, I found notes that stated that the intake ports were smaller on the 2 barrel heads.

I haven't pulled the intake yet as it's a driver. Maybe I'll have to wait to see.