where is the crankshaft position sensor on my 2008 kia rio sx hatch back

Kia » Rio » 2006-2011
Problem Description

I changed out my camshaft sensor last year. No problem...it was right up front.  I can not locate the crankshaft position sensor. Same symptoms ... stalling, sputtering. I got the code from the computer.  Crankshaft sensor is the cause.  Now where in the world is it???