Where would the oil filter location be on a 91 S-Ten 4 wheel drive 6 cylinder?

I can't find it and need to know where the location of it would be.Where would the oil filter location be on a 91 S-Ten 4 wheel drive 6 cylinder?
try looking at the engine above the left front tire thru the wheel-well opening





they make a special tool to remove it





Sears sells this one: http://www.sears.com/shc/s/p_10153_12605鈥?/a>