I have a y-block with a T-bird rear sump oil pan. I have three pickup tubes/baskets. Two are the same and locate the pickup basket about 1/4" from the bottom of the pan and about 3.5" from the back wall of the pan. The one that is different positions the basket about 1/2" from the bottom of the pan and about 1" from the back wall of the pan - just above the oil pan drain plug. Any suggestions which one should be used and why?