This is really helpful. I think the steel wheels and radiator caps are big clues.
Surprisingly similar beltlines on those two cars. The metal frame around the window is narrower right above the upper beltline on the Chevy, which does match the second and third photo. I think it can't be a '28 though, as the infant in the third picture was born in 1927.
Looks like both the Chevy and the Chrysler pictures that have been added have cowl lights, and I think I can see a cowl light in the second picture behind the boy's head (that's the infant that is in the third picture).