What size cans of clams? Some are 6.5 oz, some 10 oz.

The larger 10 ounce cans are typically whole baby clams. The 6.5 ounce cans contain either chopped or minced clams. The recipe calls for two cans of chopped clams in clam juice, so it you go with the 6.5 ounce cans, you should be on the way to what sounds like a fantastic dinner.