They did talk about the Mustang, (doing a comparison) but they were referring to the Barracuda when they were talking about the two piece "propeller shaft."???? I don't believe they were doing a 5 on 4 wheel, (5 on 4 1/2) as they are going to build it as a drag car. They custom built the wheels to fit the 13" beanie (dog dish) hub caps. The wells were monsters. They are putting a Hemi in it. Drive shaft "catch rings" custom tunnel, roll cage, etc. I guess they will finish it on the next episodes.