Thats not making sense, Don. "There is no Animal piston that will fit the Briggs crank"
Is this what you meant?
If you want to use a Wiseco piston in a Briggs there are multiple ways to do it. You can use a stock crank and a 6248 rod or a stroker crank and a 6240 rod. If you put a deck extension on and re-sleeve it there are rods for that also.