. The only thing I would like to see them improve is a thicker manifold flange and every other manufacturer should take not of the ball socket collector connection.
i agree on this thicker flanges and the ball joint would make life alot better if more people started using it, preferably with a formed 2bolt floating flange at the collector and exhaust pipe its a much better design..
the 2bolt flange can be found in 3" under late 80´s camaros and firebirds..
the balljoint is often refered to as a buick ball joint or male ball when working with exhaust