You should be able to use your image editing software to make them match pretty close.
Current sizes:
4runner - 213x100
corolla - 133x100
If you resized the 4 runner to 1/2 height, it would be about the same size (106x50).
You could crop the corolla's top/bottom of the pic to get it to a simiilar height so they match
. Either case in my current browser the images are next to the mpg pic
.