Eric,
Sorry, missed this post.
A bit tricky, as I recall the tube has a slight joggle to it to line up with the hole in the rear of the timing chest wall. Also, it is not just a matter of a tube of a certain length. The end is blocked off and there are two small holes in the lower side to attempt to align the oil stream with the grooves in the center crankshaft web that are intended to collect the oil.
The tube is threaded into the pump and there is a jam nut, so some small range of length adjustment is possible.
If you still require, I should be able to pull a timing cover off an engine and make a sketch.
-Doug
