They just downgraded quality and cosmetic appearance. Dont get me wrong the carbon fiber with thumbscrews looks sick, but after a night of running you get tired of taking the thumbscrews on and off. So the new design is more mechanic friendly, but they should have created a design with the carbon fiber. Also I feel like ae needs to quit "just updating" old cars, they nee to start releasing new stuff...t4/b4 has basically been the same design since they both came out, the 1/8th scale series has been relitavely the same with some minor and minimal major changes, the short course series has also been relitavely the same design, all have the same diffs whether its ball or gear...i just feel like ae needs to release new stuff not updated old. Like the original 44 to theb44.1 now the 44.2 theres alot of changes made, but nothing serious. Its basically the same car.