Okay, I received the rubber elbows and length of aluminum tubing today. I attached the 45 degree elbow to one end of the aluminum tube, and laid it next to the factory tube to get an idea of how much I'd need to cut off when the 90 degree elbow was placed on the other end.
Once I had the tube cut and both elbows slipped over the ends, I attempted to fit the new pieces between the throttle body and the airbox. The rubber elbows I ordered are pretty thick walled, and don't permit a lot of flexing and bending to get things situated to attach very easily.
As it turns out, two 45 degree elbows would've been a better fit than the one 90 and one 45. After several minutes of trying to get the rubber elbows slipped over the throttle body and airbox ends, I gave up! There is no way that lash-up was going to fit into my engine compartment. Add to that the confined access I had to work within, and I ended up re-installing the factory tube, with it's muffler appendage. In reality, there's nothing wrong with the factory air tube, and the sound the engine made was just fine. I have a Billy Boat stainless muffler installed, and that really does give a very pleasing exhaust note, especially while rowing through the gears at top rpm.
So, anybody wanna' try to get 45 and 90 degree thick walled rubber elbows and length of aluminum tubing to fit in their engine compartment?