I've heard their subframes are pretty weak compared to others unless you get the full "Extreme Matrix System" that they sell. Otherwise, you'd probably be better off with Maximum Motorsports full-lengths or the new Steeda full-lengths. I'm getting the Steedas welded in tomorrow. They also include some sort of thick gauge cap that welds to the connector and the bottom of the lower torquebox on each side. Looks like a good setup so I'll report back tomorrow about them.