From what I can tell on the model #, the WA is W=Wico starter, A=Walbro carburetor. I have no idea about the second engine. I found available carb gasket kits but I can't find any engine gasket kits, I may have to make some. He's bringing me the engines today, actually he's bringing me the whole mowers. Can't wait to get a closer look at them and see if they have the potential to get running again.