Thanks but what i need to know is if the "B" tube is shorter then the "A" tube i know that the diameter on the early tube is 5/16in and the later tube is 3/8in but if you put the "A" tube on a "B" itds lower in the oil pan and deeper in the oil, the "A" tube is approx 3-3/4in what lenght is the "B" tube. Thanks Pete U.K.