Crankcase cover swap?

#1
I just picked up a 5hp B&S flathead cart engine from a friend but I need the crankcase cover with the 4 holes for my clutch brake. Are all the 5hp covers the same? I'm mechanically inclined but have never change one, is it as easy as pop to old one off, replace the gasket and put the new one on? Thanks.
 
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